<|im_start|>system
You are a helpful assistant that is capable of understanding and predicting customer shopping behaviors on Amazon. You first think about the reasoning process in the mind and then predict the customer actions and action argument. The reasoning process and the predicted action and action argument are enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think>reasoning process here</think><answer>predicted action and action argument here</answer>.
<|im_end|>
<|im_start|>user
You are given a customer behavior trajectory on Amazon. This trajectory include the customer long-term information (enclosed between <|memory_start|> and <|memory_end|>), previous actions the customer has taken with timestamps (enclosed between <|action_start|> and <|action_end|>), and current observations describing what the customer sees on Amazon (e.g., a search results page, a product detail page) (enclosed between <|observation_start|> and <|observation_end|>). 
Now your task is to predict the immediate next action and action argument (i.e., input_text, product_asin, or click_type) of this shopper by analyzing shopper shopping behaviors. The available action space and action argument space are provided between <|actionspace_start|> and <|actionspace_end|> to help guide your prediction. Please first analyze the customer's behavior patterns within the  <think> </think> section, then provide your prediction within the <answer> </answer> section, ensuring your prediction falls within the specified action and argument spaces. 

<|actionspace_start|>
Available actions are represented in JSON format. There are four primary action types with their corresponding action arguments:
1. input:
Action: Type text into an input field to search for a specific product. 
Action Argument: the input_text is the specific text entered by the customer.
{
"timestamp": "timestamp",
"action": "input",
"action_argument": "input_text",
}

2. click:
Action: Click on a button or clickable element on the Amazon website.
Action Argument: The click_type is one of the buttons or clickable elements including review, product_option, other, nav_bar, quantity, page_related, suggested_term, cart_side_bar, cart_page_select, filter. Select one of these elements as action argument.
{
"timestamp": "timestamp",
"action": "click",
"action_argument": "click_type",
}

3. click_product:
Action: Click on product links or product images.
Action Argument: the Amazon Standard Identification Number (i.e., product_asin) of the clicked product.
{
"timestamp": "timestamp",
"action": "click_product",
"action_argument": "product_asin",
}

4. purchase:
Action: indicate intent to purchase by clicking on any purchase-related button. This includes clicking "Add to Cart", "Buy Now", "Set Subscription", or "Checkout" buttons for specific products. 
Action Argument: the Amazon Standard Identification Number (i.e., product_asin) of the product being purchased.
{
"timestamp": "timestamp",
"action": "purchase",
"action_argument": "product_asin",
}
<|actionspace_end|>

<|memory_start|>
{"timestamp": "2025-04-01T00:09:12.232Z", "action": "input", "action_argument": "bike pump with gauge"}
{"timestamp": "2025-04-01T00:10:24.448Z", "action": "click_product", "action_argument": "B00XLGKU14"}
{"timestamp": "2025-04-01T17:23:13.604Z", "action": "click_product", "action_argument": "B0DLBTPDCS"}
{"timestamp": "2025-04-01T17:23:35.661Z", "action": "click", "action_argument": "product_option"}
{"timestamp": "2025-04-01T17:23:40.626Z", "action": "click", "action_argument": "product_option"}
{"timestamp": "2025-04-01T17:23:48.849Z", "action": "click", "action_argument": "product_option"}
{"timestamp": "2025-04-01T17:23:54.591Z", "action": "click", "action_argument": "other"}
{"timestamp": "2025-04-07T20:39:04.148Z", "action": "input", "action_argument": "rb5424D ray ban replacement nose pads"}
{"timestamp": "2025-04-07T20:39:47.542Z", "action": "input", "action_argument": "ray ban replacement nose pads"}
{"timestamp": "2025-04-07T20:39:49.300Z", "action": "input", "action_argument": "ray ban replacement nose pads"}
{"timestamp": "2025-04-07T20:50:58.581Z", "action": "purchase", "action_argument": "B09NVPJ9ZG"}
{"timestamp": "2025-04-10T22:31:03.659Z", "action": "input", "action_argument": "internet modem x"}
{"timestamp": "2025-04-10T22:31:03.733Z", "action": "click", "action_argument": "suggested_term"}
{"timestamp": "2025-04-10T22:40:15.470Z", "action": "input", "action_argument": "wifi router"}
{"timestamp": "2025-04-10T22:54:33.370Z", "action": "purchase", "action_argument": "B0B3SQK74L"}
<|memory_end|>

<|action_start|>
{"timestamp": "2025-04-13T05:31:02.490Z", "action": "input", "action_argument": "man"}
{"timestamp": "2025-04-13T05:31:08.650Z", "action": "input", "action_argument": "manta sleep mask"}
{"timestamp": "2025-04-13T05:31:31.010Z", "action": "click", "action_argument": "page_related"}
{"timestamp": "2025-04-13T05:31:31.632Z", "action": "click", "action_argument": "page_related"}
<|action_end|>

<|observation_start|>
Your context will be the JSON string containing page metadata of the Amazon page you are looking at. This Amazon page is the context you observed after performing your last action.
{
  "search_term": [
    {
  "term": "manta sleep mask"
}
  ],
  "cart_items": [
    {"title": "NETGEAR Nighthawk Dual-Band WiFi 7 Router (RS200) \u2013 Security Features, BE6500 Wireless Speed (up to 6.5Gbps) - Covers up to 2,500 sq. ft., 80 Devices \u2013 2.5 Gig Internet Port", "asin": "B0DG6DNF94", "price": "$199.98", "quantity": "1"},
    {"title": "TP-Link AXE5400 Tri-Band WiFi 6E Router (Archer AXE75)- Gigabit Wireless Internet Router, ax Router for Gaming, VPN Router, OneMesh, WPA3", "asin": "B0B3SQK74L", "price": "$129.99", "quantity": "1"},
    {"title": "The Invisible Computer: Why Good Products Can Fail, the Personal Computer Is So Complex, and Information Appliances Are the Solution", "asin": "0262640414", "price": "$35.00", "quantity": "1"},
    {"title": "Scenario-Based Design: Envisioning Work and Technology in System Development", "asin": "0471076597", "price": "$33.36", "quantity": "1"},
    {"title": "Things That Make Us Smart (William Patrick Book)", "asin": "0201626950", "price": "$11.33", "quantity": "1"},
    {"title": "Participatory Design: Principles and Practices", "asin": "0805809511", "price": "$99.99", "quantity": "1"},
    {"title": "The Nurnberg Funnel: Designing Minimalist Instruction for Practical Computer Skill (Technical Communication, Multimedia, and Information Systems)", "asin": "0262031639", "price": "$11.93", "quantity": "1"},
    {"title": "Computer-Supported Cooperative Work: A Book of Readings", "asin": "0934613575", "price": "$16.30", "quantity": "1"},
    {"title": "User Centered System Design: New Perspectives on Human-computer Interaction", "asin": "0898598729", "price": "$130.00", "quantity": "1"},
    {"title": "Human-Machine Reconfigurations: Plans and Situated Actions (Learning in Doing: Social, Cognitive and Computational Perspectives)", "asin": "052167588X", "price": "$44.99", "quantity": "1"},
    {"title": "The Human Use Of Human Beings", "asin": "0306803208", "price": "$8.87", "quantity": "1"},
    {"title": "Emotional Design: Why We Love (or Hate) Everyday Things", "asin": "0465051367", "price": "$10.79", "quantity": "1"},
    {"title": "The Design of Everyday Things: Revised and Expanded Edition", "asin": "0465050654", "price": "$12.77", "quantity": "1"}
  ],
  "product_details": [
    {
  "asin": "B07PRG2CQY"
},
    {
  "title": "Manta Sleep Mask - 100% Light Blocking Eye Mask, Adjustable Sleeping Mask with Detachable Eye Cups, Ultra Comfortable for Women & Men, Zero Pressure on Lashes, Perfect for Deep Rest/Travel/Shift Work"
},
    {
  "price": "$35.00"
},
    {
  "bullet_list": "100% Blackout for Deeper Sleep \u2014 Just a pinprick of light can disrupt REM and deep sleep, leading to post-sleep tiredness. That's why Manta perfectly covers and conforms to your eyes to block 100% of light, even in broad daylight \u2014 so you always get deep, uninterrupted sleep. Infinitely Adjustable for Personalized Fit \u2014 Manta is made to fit your unique face. Your eye cups' position, angle, and strap tightness are infinitely adjustable for a fit so seamless, that you barely feel your mask on your face. It's like it was custom-made for you. Soft, Breathable, Durable Materials \u2014 Manta is designed for no-compromises comfort and is constructed with super soft, breathable, durable materials that gently conform to your face without putting any pressure on your eyes. Zero Pressure on Eyes or Lashes \u2014 Deeply molded eye cups for complete comfort in every position. So you snooze soundly whether you're on your back, side, or stomach. 100% Machine Washable for Easy Care \u2014 Designed with your busy life in mind, your Manta is a breeze to clean. Simply use cold water, place the mask (eye cups and all) in the included carrying pouch, which doubles as a handy laundry mesh net, and then lay it flat to air dry. Wake up every day to a refreshingly pristine sleep experience."
}
  ],
  "product_quantity": [
    {
  "quantity": "1"
}
  ],
  "product_options": [
    {
  "Color": "Gray"
},
    {
  "Size": "1 Count (Pack of 1)"
}
  ],
  "promotion_items": [
    {"title": "Manta Pro Sleep Mask - 100% Light Blocking Sleep Mask for Side Sleepers, Breathable and Comfortable, Spacious & Zero Pressure for Long Lashes, Perfect for Sleep/Travel/Nap/Shift Work", "asin": "B0C36K8SJJ", "price": "$85.00", "quantity": ""},
    {"title": "Manta Silk Sleep Mask - Luxury Silk Eye Mask with Pure Silk Eye Cups, Gentle on Skin & Hair, Breathable, Sleep Mask withTapered Fit for Comfort, Adjustable Head Strap, True 100% Blackout Silk Eye Mask", "asin": "B0D8M5MDCS", "price": "$69.00", "quantity": ""},
    {"title": "Manta Slim Sleep Mask - Ultra-Lightweight Blackout Eye Mask, Slim Elastic Head Band Comfort Design, Zero Pressure Eye Mask, Infinitely Adjustable Eye Cups, Perfect for Side Sleepers", "asin": "B08661DWZR", "price": "$35.00", "quantity": ""},
    {"title": "Manta Sleep Slim Essential Bundle - Manta Slim Sleep Mask + Manta Original Head Strap - Ultra-Lightweight Blackout Eye Mask Paired with Original Adjustable Head Strap for Deep Sleep, Rest, Nap, Travel", "asin": "B0D83YWGBV", "price": "$54.00", "quantity": ""},
    {"title": "Manta Cool Sleep Mask - Blackout Cooling Eye Mask with Zero Eye Pressure, Ceramic Cooling Beads Sleeping Mask for Migraine Headaches, Sleeping, Allergies, Puffy Eyes & Sinus Relief", "asin": "B0865RLTXB", "price": "$45.00", "quantity": ""},
    {"title": "Manta Sleep Pro & Slim Duo - Manta Slim Sleep Mask + Manta Pro Sleep Mask - 100% Total Blackout, Fully Adjustable, Zero Eye Pressure Eye Mask for Sleeping, Travels and Nap", "asin": "B0D83WHBZK", "price": "$105.00", "quantity": ""},
    {"title": "Manta Sleep Slim Ice Bundle - Manta Slim Sleep Mask Plus Cool Eye Cups for Deep Relaxation, Puffy, Tired & Sore Eyes, Naps", "asin": "B0D8428BLX", "price": "$59.00", "quantity": ""}
  ],
  "comparison_items": [
    {"title": "Manta Sleep Mask - 100% Light Blocking Eye Mask, Adjustable Sleeping Mask with Detachable Eye Cups, Ultra Comfortable for Women & Men, Zero Pressure on Lashes, Perfect for Deep Rest/Travel/Shift Work", "asin": "B07PRG2CQY", "price": "$35.00"},
    {"title": "LitBear Sleep Mask for Side Sleeper Women Men, Eye Mask for Sleeping Light Blocking, 3D Contoured Cup Sleeping Mask, Soft Breathable Sleep Eye Mask with Adjustable Elastic Strap for Flight Nap", "asin": "B0C9DQX34F", "price": "$16.99"},
    {"title": "MABAO Sleep Mask for Side Sleeper, Eye Mask for Sleeping Women Men, 3D Contoured Cup No Eye Pressure 100% Light Blocking Sleeping Mask with Adjustable Strap Night Blindfold Flight, Travel, Nap, Black", "asin": "B09XTVHMQ1", "price": "$5.99"},
    {"title": "TOPOINT Sleep Mask Headphones Bluetooth Wireless 5.4, Breathable Cotton Eye Mask for Sleeping Side Sleepers Travel Music Headsets with Microphone Handsfree Men Women", "asin": "B0CKDZM4HH", "price": "$26.99"},
    {"title": "Manta Silk Sleep Mask - Luxury Silk Eye Mask with Pure Silk Eye Cups, Gentle on Skin & Hair, Breathable, Sleep Mask withTapered Fit for Comfort, Adjustable Head Strap, True 100% Blackout Silk Eye Mask", "asin": "B0D8M5MDCS", "price": "$69.00"},
    {"title": "YIVIEW Sleep Mask for Side Sleeper, Complete Light Blocking 3D Sleeping Eye Mask, Soft Breathable Eye Cover for Women Men, Relaxing Zero Pressure Night Blindfold", "asin": "B07Q6WLX5J", "price": "$9.99"}
  ]
}
<|observation_end|>

# Output Format
Please provide your response in JSON format within <answer></answer> tags using the following schema:
"<answer>
{
"timestamp": "2025-04-13T05:31:36.997Z", // the timestamp when this action occurs
"action": "string", // one of four action: input, click, click_product, purchase
"acion_argument": "string", // appropriate value based on action type: input_text, click_type (i.e., select one from review, product_option, other, nav_bar, quantity, page_related, suggested_term, cart_side_bar, cart_page_select, filter), or product_asin
}
</answer>"

<|im_end|>
<|im_start|>assistant
<think>

user
<|im_start|>system
You are a helpful assistant that is capable of understanding and predicting customer shopping behaviors on Amazon. You first think about the reasoning process in the mind and then predict the customer actions and action argument. The reasoning process and the predicted action and action argument are enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think>reasoning process here</think><answer>predicted action and action argument here</answer>.
<|im_end|>
<|im_start|>user
You are given a customer behavior trajectory on Amazon. This trajectory include the customer long-term information (enclosed between <|memory_start|> and <|memory_end|>), previous actions the customer has taken with timestamps (enclosed between <|action_start|> and <|action_end|>), and current observations describing what the customer sees on Amazon (e.g., a search results page, a product detail page) (enclosed between <|observation_start|> and <|observation_end|>). 
Now your task is to predict the immediate next action and action argument (i.e., input_text, product_asin, or click_type) of this shopper by analyzing shopper shopping behaviors. The available action space and action argument space are provided between <|actionspace_start|> and <|actionspace_end|> to help guide your prediction. Please first analyze the customer's behavior patterns within the  <think> </think> section, then provide your prediction within the <answer> </answer> section, ensuring your prediction falls within the specified action and argument spaces. 

<|actionspace_start|>
Available actions are represented in JSON format. There are four primary action types with their corresponding action arguments:
1. input:
Action: Type text into an input field to search for a specific product. 
Action Argument: the input_text is the specific text entered by the customer.
{
"timestamp": "timestamp",
"action": "input",
"action_argument": "input_text",
}

2. click:
Action: Click on a button or clickable element on the Amazon website.
Action Argument: The click_type is one of the buttons or clickable elements including review, product_option, other, nav_bar, quantity, page_related, suggested_term, cart_side_bar, cart_page_select, filter. Select one of these elements as action argument.
{
"timestamp": "timestamp",
"action": "click",
"action_argument": "click_type",
}

3. click_product:
Action: Click on product links or product images.
Action Argument: the Amazon Standard Identification Number (i.e., product_asin) of the clicked product.
{
"timestamp": "timestamp",
"action": "click_product",
"action_argument": "product_asin",
}

4. purchase:
Action: indicate intent to purchase by clicking on any purchase-related button. This includes clicking "Add to Cart", "Buy Now", "Set Subscription", or "Checkout" buttons for specific products. 
Action Argument: the Amazon Standard Identification Number (i.e., product_asin) of the product being purchased.
{
"timestamp": "timestamp",
"action": "purchase",
"action_argument": "product_asin",
}
<|actionspace_end|>

<|memory_start|>
{"timestamp": "2025-04-01T00:09:12.232Z", "action": "input", "action_argument": "bike pump with gauge"}
{"timestamp": "2025-04-01T00:10:24.448Z", "action": "click_product", "action_argument": "B00XLGKU14"}
{"timestamp": "2025-04-01T17:23:13.604Z", "action": "click_product", "action_argument": "B0DLBTPDCS"}
{"timestamp": "2025-04-01T17:23:35.661Z", "action": "click", "action_argument": "product_option"}
{"timestamp": "2025-04-01T17:23:40.626Z", "action": "click", "action_argument": "product_option"}
{"timestamp": "2025-04-01T17:23:48.849Z", "action": "click", "action_argument": "product_option"}
{"timestamp": "2025-04-01T17:23:54.591Z", "action": "click", "action_argument": "other"}
{"timestamp": "2025-04-07T20:39:04.148Z", "action": "input", "action_argument": "rb5424D ray ban replacement nose pads"}
{"timestamp": "2025-04-07T20:39:47.542Z", "action": "input", "action_argument": "ray ban replacement nose pads"}
{"timestamp": "2025-04-07T20:39:49.300Z", "action": "input", "action_argument": "ray ban replacement nose pads"}
{"timestamp": "2025-04-07T20:50:58.581Z", "action": "purchase", "action_argument": "B09NVPJ9ZG"}
{"timestamp": "2025-04-10T22:31:03.659Z", "action": "input", "action_argument": "internet modem x"}
{"timestamp": "2025-04-10T22:31:03.733Z", "action": "click", "action_argument": "suggested_term"}
{"timestamp": "2025-04-10T22:40:15.470Z", "action": "input", "action_argument": "wifi router"}
{"timestamp": "2025-04-10T22:54:33.370Z", "action": "purchase", "action_argument": "B0B3SQK74L"}
<|memory_end|>

<|action_start|>
{"timestamp": "2025-04-13T05:31:02.490Z", "action": "input", "action_argument": "man"}
{"timestamp": "2025-04-13T05:31:08.650Z", "action": "input", "action_argument": "manta sleep mask"}
{"timestamp": "2025-04-13T05:31:31.010Z", "action": "click", "action_argument": "page_related"}
{"timestamp": "2025-04-13T05:31:31.632Z", "action": "click", "action_argument": "page_related"}
<|action_end|>

<|observation_start|>
Your context will be the JSON string containing page metadata of the Amazon page you are looking at. This Amazon page is the context you observed after performing your last action.
{
  "search_term": [
    {
  "term": "manta sleep mask"
}
  ],
  "cart_items": [
    {"title": "NETGEAR Nighthawk Dual-Band WiFi 7 Router (RS200) \u2013 Security Features, BE6500 Wireless Speed (up to 6.5Gbps) - Covers up to 2,500 sq. ft., 80 Devices \u2013 2.5 Gig Internet Port", "asin": "B0DG6DNF94", "price": "$199.98", "quantity": "1"},
    {"title": "TP-Link AXE5400 Tri-Band WiFi 6E Router (Archer AXE75)- Gigabit Wireless Internet Router, ax Router for Gaming, VPN Router, OneMesh, WPA3", "asin": "B0B3SQK74L", "price": "$129.99", "quantity": "1"},
    {"title": "The Invisible Computer: Why Good Products Can Fail, the Personal Computer Is So Complex, and Information Appliances Are the Solution", "asin": "0262640414", "price": "$35.00", "quantity": "1"},
    {"title": "Scenario-Based Design: Envisioning Work and Technology in System Development", "asin": "0471076597", "price": "$33.36", "quantity": "1"},
    {"title": "Things That Make Us Smart (William Patrick Book)", "asin": "0201626950", "price": "$11.33", "quantity": "1"},
    {"title": "Participatory Design: Principles and Practices", "asin": "0805809511", "price": "$99.99", "quantity": "1"},
    {"title": "The Nurnberg Funnel: Designing Minimalist Instruction for Practical Computer Skill (Technical Communication, Multimedia, and Information Systems)", "asin": "0262031639", "price": "$11.93", "quantity": "1"},
    {"title": "Computer-Supported Cooperative Work: A Book of Readings", "asin": "0934613575", "price": "$16.30", "quantity": "1"},
    {"title": "User Centered System Design: New Perspectives on Human-computer Interaction", "asin": "0898598729", "price": "$130.00", "quantity": "1"},
    {"title": "Human-Machine Reconfigurations: Plans and Situated Actions (Learning in Doing: Social, Cognitive and Computational Perspectives)", "asin": "052167588X", "price": "$44.99", "quantity": "1"},
    {"title": "The Human Use Of Human Beings", "asin": "0306803208", "price": "$8.87", "quantity": "1"},
    {"title": "Emotional Design: Why We Love (or Hate) Everyday Things", "asin": "0465051367", "price": "$10.79", "quantity": "1"},
    {"title": "The Design of Everyday Things: Revised and Expanded Edition", "asin": "0465050654", "price": "$12.77", "quantity": "1"}
  ],
  "product_details": [
    {
  "asin": "B07PRG2CQY"
},
    {
  "title": "Manta Sleep Mask - 100% Light Blocking Eye Mask, Adjustable Sleeping Mask with Detachable Eye Cups, Ultra Comfortable for Women & Men, Zero Pressure on Lashes, Perfect for Deep Rest/Travel/Shift Work"
},
    {
  "price": "$35.00"
},
    {
  "bullet_list": "100% Blackout for Deeper Sleep \u2014 Just a pinprick of light can disrupt REM and deep sleep, leading to post-sleep tiredness. That's why Manta perfectly covers and conforms to your eyes to block 100% of light, even in broad daylight \u2014 so you always get deep, uninterrupted sleep. Infinitely Adjustable for Personalized Fit \u2014 Manta is made to fit your unique face. Your eye cups' position, angle, and strap tightness are infinitely adjustable for a fit so seamless, that you barely feel your mask on your face. It's like it was custom-made for you. Soft, Breathable, Durable Materials \u2014 Manta is designed for no-compromises comfort and is constructed with super soft, breathable, durable materials that gently conform to your face without putting any pressure on your eyes. Zero Pressure on Eyes or Lashes \u2014 Deeply molded eye cups for complete comfort in every position. So you snooze soundly whether you're on your back, side, or stomach. 100% Machine Washable for Easy Care \u2014 Designed with your busy life in mind, your Manta is a breeze to clean. Simply use cold water, place the mask (eye cups and all) in the included carrying pouch, which doubles as a handy laundry mesh net, and then lay it flat to air dry. Wake up every day to a refreshingly pristine sleep experience."
}
  ],
  "product_quantity": [
    {
  "quantity": "1"
}
  ],
  "product_options": [
    {
  "Color": "Gray"
},
    {
  "Size": "1 Count (Pack of 1)"
}
  ],
  "promotion_items": [
    {"title": "Manta Pro Sleep Mask - 100% Light Blocking Sleep Mask for Side Sleepers, Breathable and Comfortable, Spacious & Zero Pressure for Long Lashes, Perfect for Sleep/Travel/Nap/Shift Work", "asin": "B0C36K8SJJ", "price": "$85.00", "quantity": ""},
    {"title": "Manta Silk Sleep Mask - Luxury Silk Eye Mask with Pure Silk Eye Cups, Gentle on Skin & Hair, Breathable, Sleep Mask withTapered Fit for Comfort, Adjustable Head Strap, True 100% Blackout Silk Eye Mask", "asin": "B0D8M5MDCS", "price": "$69.00", "quantity": ""},
    {"title": "Manta Slim Sleep Mask - Ultra-Lightweight Blackout Eye Mask, Slim Elastic Head Band Comfort Design, Zero Pressure Eye Mask, Infinitely Adjustable Eye Cups, Perfect for Side Sleepers", "asin": "B08661DWZR", "price": "$35.00", "quantity": ""},
    {"title": "Manta Sleep Slim Essential Bundle - Manta Slim Sleep Mask + Manta Original Head Strap - Ultra-Lightweight Blackout Eye Mask Paired with Original Adjustable Head Strap for Deep Sleep, Rest, Nap, Travel", "asin": "B0D83YWGBV", "price": "$54.00", "quantity": ""},
    {"title": "Manta Cool Sleep Mask - Blackout Cooling Eye Mask with Zero Eye Pressure, Ceramic Cooling Beads Sleeping Mask for Migraine Headaches, Sleeping, Allergies, Puffy Eyes & Sinus Relief", "asin": "B0865RLTXB", "price": "$45.00", "quantity": ""},
    {"title": "Manta Sleep Pro & Slim Duo - Manta Slim Sleep Mask + Manta Pro Sleep Mask - 100% Total Blackout, Fully Adjustable, Zero Eye Pressure Eye Mask for Sleeping, Travels and Nap", "asin": "B0D83WHBZK", "price": "$105.00", "quantity": ""},
    {"title": "Manta Sleep Slim Ice Bundle - Manta Slim Sleep Mask Plus Cool Eye Cups for Deep Relaxation, Puffy, Tired & Sore Eyes, Naps", "asin": "B0D8428BLX", "price": "$59.00", "quantity": ""}
  ],
  "comparison_items": [
    {"title": "Manta Sleep Mask - 100% Light Blocking Eye Mask, Adjustable Sleeping Mask with Detachable Eye Cups, Ultra Comfortable for Women & Men, Zero Pressure on Lashes, Perfect for Deep Rest/Travel/Shift Work", "asin": "B07PRG2CQY", "price": "$35.00"},
    {"title": "LitBear Sleep Mask for Side Sleeper Women Men, Eye Mask for Sleeping Light Blocking, 3D Contoured Cup Sleeping Mask, Soft Breathable Sleep Eye Mask with Adjustable Elastic Strap for Flight Nap", "asin": "B0C9DQX34F", "price": "$16.99"},
    {"title": "MABAO Sleep Mask for Side Sleeper, Eye Mask for Sleeping Women Men, 3D Contoured Cup No Eye Pressure 100% Light Blocking Sleeping Mask with Adjustable Strap Night Blindfold Flight, Travel, Nap, Black", "asin": "B09XTVHMQ1", "price": "$5.99"},
    {"title": "TOPOINT Sleep Mask Headphones Bluetooth Wireless 5.4, Breathable Cotton Eye Mask for Sleeping Side Sleepers Travel Music Headsets with Microphone Handsfree Men Women", "asin": "B0CKDZM4HH", "price": "$26.99"},
    {"title": "Manta Silk Sleep Mask - Luxury Silk Eye Mask with Pure Silk Eye Cups, Gentle on Skin & Hair, Breathable, Sleep Mask withTapered Fit for Comfort, Adjustable Head Strap, True 100% Blackout Silk Eye Mask", "asin": "B0D8M5MDCS", "price": "$69.00"},
    {"title": "YIVIEW Sleep Mask for Side Sleeper, Complete Light Blocking 3D Sleeping Eye Mask, Soft Breathable Eye Cover for Women Men, Relaxing Zero Pressure Night Blindfold", "asin": "B07Q6WLX5J", "price": "$9.99"}
  ]
}
<|observation_end|>

# Output Format
Please provide your response in JSON format within <answer></answer> tags using the following schema:
"<answer>
{
"timestamp": "2025-04-13T05:31:36.997Z", // the timestamp when this action occurs
"action": "string", // one of four action: input, click, click_product, purchase
"acion_argument": "string", // appropriate value based on action type: input_text, click_type (i.e., select one from review, product_option, other, nav_bar, quantity, page_related, suggested_term, cart_side_bar, cart_page_select, filter), or product_asin
}
</answer>"

<|im_end|>
<|im_start|>assistant
<think>

<|im_start|>system
You are a helpful assistant that is capable of understanding and predicting customer shopping behaviors on Amazon. You first think about the reasoning process in the mind and then predict the customer actions and action argument. The reasoning process and the predicted action and action argument are enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think>reasoning process here</think><answer>predicted action and action argument here</answer>.
<|im_end|>
<|im_start|>user
You are given a customer behavior trajectory on Amazon. This trajectory include the customer long-term information (enclosed between <|memory_start|> and <|memory_end|>), previous actions the customer has taken with timestamps (enclosed between <|action_start|> and <|action_end|>), and current observations describing what the customer sees on Amazon (e.g., a search results page, a product detail page) (enclosed between <|observation_start|> and <|observation_end|>). 
Now your task is to predict the immediate next action and action argument (i.e., input_text, product_asin, or click_type) of this shopper by analyzing shopper shopping behaviors. The available action space and action argument space are provided between <|actionspace_start|> and <|actionspace_end|> to help guide your prediction. Please first analyze the customer's behavior patterns within the  <think> </think> section, then provide your prediction within the <answer> </answer> section, ensuring your prediction falls within the specified action and argument spaces. 

<|actionspace_start|>
Available actions are represented in JSON format. There are four primary action types with their corresponding action arguments:
1. input:
Action: Type text into an input field to search for a specific product. 
Action Argument: the input_text is the specific text entered by the customer.
{
"timestamp": "timestamp",
"action": "input",
"action_argument": "input_text",
}

2. click:
Action: Click on a button or clickable element on the Amazon website.
Action Argument: The click_type is one of the buttons or clickable elements including review, product_option, other, nav_bar, quantity, page_related, suggested_term, cart_side_bar, cart_page_select, filter. Select one of these elements as action argument.
{
"timestamp": "timestamp",
"action": "click",
"action_argument": "click_type",
}

3. click_product:
Action: Click on product links or product images.
Action Argument: the Amazon Standard Identification Number (i.e., product_asin) of the clicked product.
{
"timestamp": "timestamp",
"action": "click_product",
"action_argument": "product_asin",
}

4. purchase:
Action: indicate intent to purchase by clicking on any purchase-related button. This includes clicking "Add to Cart", "Buy Now", "Set Subscription", or "Checkout" buttons for specific products. 
Action Argument: the Amazon Standard Identification Number (i.e., product_asin) of the product being purchased.
{
"timestamp": "timestamp",
"action": "purchase",
"action_argument": "product_asin",
}
<|actionspace_end|>

<|memory_start|>
{"timestamp": "2025-04-01T00:09:12.232Z", "action": "input", "action_argument": "bike pump with gauge"}
{"timestamp": "2025-04-01T00:10:24.448Z", "action": "click_product", "action_argument": "B00XLGKU14"}
{"timestamp": "2025-04-01T17:23:13.604Z", "action": "click_product", "action_argument": "B0DLBTPDCS"}
{"timestamp": "2025-04-01T17:23:35.661Z", "action": "click", "action_argument": "product_option"}
{"timestamp": "2025-04-01T17:23:40.626Z", "action": "click", "action_argument": "product_option"}
{"timestamp": "2025-04-01T17:23:48.849Z", "action": "click", "action_argument": "product_option"}
{"timestamp": "2025-04-01T17:23:54.591Z", "action": "click", "action_argument": "other"}
{"timestamp": "2025-04-07T20:39:04.148Z", "action": "input", "action_argument": "rb5424D ray ban replacement nose pads"}
{"timestamp": "2025-04-07T20:39:47.542Z", "action": "input", "action_argument": "ray ban replacement nose pads"}
{"timestamp": "2025-04-07T20:39:49.300Z", "action": "input", "action_argument": "ray ban replacement nose pads"}
{"timestamp": "2025-04-07T20:50:58.581Z", "action": "purchase", "action_argument": "B09NVPJ9ZG"}
{"timestamp": "2025-04-10T22:31:03.659Z", "action": "input", "action_argument": "internet modem x"}
{"timestamp": "2025-04-10T22:31:03.733Z", "action": "click", "action_argument": "suggested_term"}
{"timestamp": "2025-04-10T22:40:15.470Z", "action": "input", "action_argument": "wifi router"}
{"timestamp": "2025-04-10T22:54:33.370Z", "action": "purchase", "action_argument": "B0B3SQK74L"}
<|memory_end|>

<|action_start|>
{"timestamp": "2025-04-13T05:31:02.490Z", "action": "input", "action_argument": "man"}
{"timestamp": "2025-04-13T05:31:08.650Z", "action": "input", "action_argument": "manta sleep mask"}
{"timestamp": "2025-04-13T05:31:31.010Z", "action": "click", "action_argument": "page_related"}
{"timestamp": "2025-04-13T05:31:31.632Z", "action": "click", "action_argument": "page_related"}
<|action_end|>

<|observation_start|>
Your context will be the JSON string containing page metadata of the Amazon page you are looking at. This Amazon page is the context you observed after performing your last action.
{
  "search_term": [
    {
  "term": "manta sleep mask"
}
  ],
  "cart_items": [
    {"title": "NETGEAR Nighthawk Dual-Band WiFi 7 Router (RS200) \u2013 Security Features, BE6500 Wireless Speed (up to 6.5Gbps) - Covers up to 2,500 sq. ft., 80 Devices \u2013 2.5 Gig Internet Port", "asin": "B0DG6DNF94", "price": "$199.98", "quantity": "1"},
    {"title": "TP-Link AXE5400 Tri-Band WiFi 6E Router (Archer AXE75)- Gigabit Wireless Internet Router, ax Router for Gaming, VPN Router, OneMesh, WPA3", "asin": "B0B3SQK74L", "price": "$129.99", "quantity": "1"},
    {"title": "The Invisible Computer: Why Good Products Can Fail, the Personal Computer Is So Complex, and Information Appliances Are the Solution", "asin": "0262640414", "price": "$35.00", "quantity": "1"},
    {"title": "Scenario-Based Design: Envisioning Work and Technology in System Development", "asin": "0471076597", "price": "$33.36", "quantity": "1"},
    {"title": "Things That Make Us Smart (William Patrick Book)", "asin": "0201626950", "price": "$11.33", "quantity": "1"},
    {"title": "Participatory Design: Principles and Practices", "asin": "0805809511", "price": "$99.99", "quantity": "1"},
    {"title": "The Nurnberg Funnel: Designing Minimalist Instruction for Practical Computer Skill (Technical Communication, Multimedia, and Information Systems)", "asin": "0262031639", "price": "$11.93", "quantity": "1"},
    {"title": "Computer-Supported Cooperative Work: A Book of Readings", "asin": "0934613575", "price": "$16.30", "quantity": "1"},
    {"title": "User Centered System Design: New Perspectives on Human-computer Interaction", "asin": "0898598729", "price": "$130.00", "quantity": "1"},
    {"title": "Human-Machine Reconfigurations: Plans and Situated Actions (Learning in Doing: Social, Cognitive and Computational Perspectives)", "asin": "052167588X", "price": "$44.99", "quantity": "1"},
    {"title": "The Human Use Of Human Beings", "asin": "0306803208", "price": "$8.87", "quantity": "1"},
    {"title": "Emotional Design: Why We Love (or Hate) Everyday Things", "asin": "0465051367", "price": "$10.79", "quantity": "1"},
    {"title": "The Design of Everyday Things: Revised and Expanded Edition", "asin": "0465050654", "price": "$12.77", "quantity": "1"}
  ],
  "product_details": [
    {
  "asin": "B07PRG2CQY"
},
    {
  "title": "Manta Sleep Mask - 100% Light Blocking Eye Mask, Adjustable Sleeping Mask with Detachable Eye Cups, Ultra Comfortable for Women & Men, Zero Pressure on Lashes, Perfect for Deep Rest/Travel/Shift Work"
},
    {
  "price": "$35.00"
},
    {
  "bullet_list": "100% Blackout for Deeper Sleep \u2014 Just a pinprick of light can disrupt REM and deep sleep, leading to post-sleep tiredness. That's why Manta perfectly covers and conforms to your eyes to block 100% of light, even in broad daylight \u2014 so you always get deep, uninterrupted sleep. Infinitely Adjustable for Personalized Fit \u2014 Manta is made to fit your unique face. Your eye cups' position, angle, and strap tightness are infinitely adjustable for a fit so seamless, that you barely feel your mask on your face. It's like it was custom-made for you. Soft, Breathable, Durable Materials \u2014 Manta is designed for no-compromises comfort and is constructed with super soft, breathable, durable materials that gently conform to your face without putting any pressure on your eyes. Zero Pressure on Eyes or Lashes \u2014 Deeply molded eye cups for complete comfort in every position. So you snooze soundly whether you're on your back, side, or stomach. 100% Machine Washable for Easy Care \u2014 Designed with your busy life in mind, your Manta is a breeze to clean. Simply use cold water, place the mask (eye cups and all) in the included carrying pouch, which doubles as a handy laundry mesh net, and then lay it flat to air dry. Wake up every day to a refreshingly pristine sleep experience."
}
  ],
  "product_quantity": [
    {
  "quantity": "1"
}
  ],
  "product_options": [
    {
  "Color": "Gray"
},
    {
  "Size": "1 Count (Pack of 1)"
}
  ],
  "promotion_items": [
    {"title": "Manta Pro Sleep Mask - 100% Light Blocking Sleep Mask for Side Sleepers, Breathable and Comfortable, Spacious & Zero Pressure for Long Lashes, Perfect for Sleep/Travel/Nap/Shift Work", "asin": "B0C36K8SJJ", "price": "$85.00", "quantity": ""},
    {"title": "Manta Silk Sleep Mask - Luxury Silk Eye Mask with Pure Silk Eye Cups, Gentle on Skin & Hair, Breathable, Sleep Mask withTapered Fit for Comfort, Adjustable Head Strap, True 100% Blackout Silk Eye Mask", "asin": "B0D8M5MDCS", "price": "$69.00", "quantity": ""},
    {"title": "Manta Slim Sleep Mask - Ultra-Lightweight Blackout Eye Mask, Slim Elastic Head Band Comfort Design, Zero Pressure Eye Mask, Infinitely Adjustable Eye Cups, Perfect for Side Sleepers", "asin": "B08661DWZR", "price": "$35.00", "quantity": ""},
    {"title": "Manta Sleep Slim Essential Bundle - Manta Slim Sleep Mask + Manta Original Head Strap - Ultra-Lightweight Blackout Eye Mask Paired with Original Adjustable Head Strap for Deep Sleep, Rest, Nap, Travel", "asin": "B0D83YWGBV", "price": "$54.00", "quantity": ""},
    {"title": "Manta Cool Sleep Mask - Blackout Cooling Eye Mask with Zero Eye Pressure, Ceramic Cooling Beads Sleeping Mask for Migraine Headaches, Sleeping, Allergies, Puffy Eyes & Sinus Relief", "asin": "B0865RLTXB", "price": "$45.00", "quantity": ""},
    {"title": "Manta Sleep Pro & Slim Duo - Manta Slim Sleep Mask + Manta Pro Sleep Mask - 100% Total Blackout, Fully Adjustable, Zero Eye Pressure Eye Mask for Sleeping, Travels and Nap", "asin": "B0D83WHBZK", "price": "$105.00", "quantity": ""},
    {"title": "Manta Sleep Slim Ice Bundle - Manta Slim Sleep Mask Plus Cool Eye Cups for Deep Relaxation, Puffy, Tired & Sore Eyes, Naps", "asin": "B0D8428BLX", "price": "$59.00", "quantity": ""}
  ],
  "comparison_items": [
    {"title": "Manta Sleep Mask - 100% Light Blocking Eye Mask, Adjustable Sleeping Mask with Detachable Eye Cups, Ultra Comfortable for Women & Men, Zero Pressure on Lashes, Perfect for Deep Rest/Travel/Shift Work", "asin": "B07PRG2CQY", "price": "$35.00"},
    {"title": "LitBear Sleep Mask for Side Sleeper Women Men, Eye Mask for Sleeping Light Blocking, 3D Contoured Cup Sleeping Mask, Soft Breathable Sleep Eye Mask with Adjustable Elastic Strap for Flight Nap", "asin": "B0C9DQX34F", "price": "$16.99"},
    {"title": "MABAO Sleep Mask for Side Sleeper, Eye Mask for Sleeping Women Men, 3D Contoured Cup No Eye Pressure 100% Light Blocking Sleeping Mask with Adjustable Strap Night Blindfold Flight, Travel, Nap, Black", "asin": "B09XTVHMQ1", "price": "$5.99"},
    {"title": "TOPOINT Sleep Mask Headphones Bluetooth Wireless 5.4, Breathable Cotton Eye Mask for Sleeping Side Sleepers Travel Music Headsets with Microphone Handsfree Men Women", "asin": "B0CKDZM4HH", "price": "$26.99"},
    {"title": "Manta Silk Sleep Mask - Luxury Silk Eye Mask with Pure Silk Eye Cups, Gentle on Skin & Hair, Breathable, Sleep Mask withTapered Fit for Comfort, Adjustable Head Strap, True 100% Blackout Silk Eye Mask", "asin": "B0D8M5MDCS", "price": "$69.00"},
    {"title": "YIVIEW Sleep Mask for Side Sleeper, Complete Light Blocking 3D Sleeping Eye Mask, Soft Breathable Eye Cover for Women Men, Relaxing Zero Pressure Night Blindfold", "asin": "B07Q6WLX5J", "price": "$9.99"}
  ]
}
<|observation_end|>

# Output Format
Please provide your response in JSON format within <answer></answer> tags using the following schema:
"<answer>
{
"timestamp": "2025-04-13T05:31:36.997Z", // the timestamp when this action occurs
"action": "string", // one of four action: input, click, click_product, purchase
"acion_argument": "string", // appropriate value based on action type: input_text, click_type (i.e., select one from review, product_option, other, nav_bar, quantity, page_related, suggested_term, cart_side_bar, cart_page_select, filter), or product_asin
}
</answer>"

<|im_end|>
<|im_start|>assistant
<think>
