<|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 UI interface button or clickable element on the Amazon website.
Action Argument: The clickable_name is one of the UI interface buttons or clickable elements including "review", "search", "product_option", "other", "nav_bar", "quantity", "page_related", "suggested_term", "cart_side_bar", "cart_page_select", and "filter". Select one of these buttons or clickable elements as action argument.
{
"timestamp": "timestamp",
"action": "click",
"action_argument": "clickable_name",
}

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|>
<|memory_end|>

<|action_start|>
{"timestamp": "2025-04-23T05:50:15.921Z", "action": "input", "action_argument": "mask n95"}
<|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.
"promotion_items": [{"title": "BLScode KN95 Face Mask 60 Pack,Individually Wrapped 5-Layer face Masks,Filter Efficiency\u226595%", "asin": "B09FJT8R2G", "price": "$24.99", "quantity": ""},
{"title": "Shawmut Protex\u2122 N95 Mask, Made in the USA NIOSH Approved, Particulate Respirators, Protective Face Mask", "asin": "B09GWFNFS7", "price": "$18.49", "quantity": ""},
{"title": "KN95 Face Mask,KN95 Mask,Cup Masks Breathable 5-Layer Filter Efficiency\u226595% Disposable Certified Face Mask", "asin": "B08NXBG87C", "price": "$19.99", "quantity": ""},
{"title": "N95 Mask - NIOSH Approved (White, Pack of 10), Lightweight design, Breathable and comfortable for long periods of wear, N95 Masks For Adults helps filter Pollen and Dust, Universal Fit", "asin": "B0B9DMYPKT", "price": "$21.99", "quantity": ""},
{"title": "HALIDODO 60 Packs Individually Wrapped KN95 Face Mask 5-Ply Breathable & Comfortable Filter Safety Mask with Elastic Ear loop and Nose Bridge Clip, Protective Face Cover Mask, Multi Color", "asin": "B09365C9ZL", "price": "$17.99", "quantity": ""},
{"title": "Shawmut Protex\u2122 N95 Mask, Made in the USA NIOSH Approved, Particulate Respirators, Protective Face Mask", "asin": "B09GWFNFS7", "price": "$18.49", "quantity": ""},
{"title": "KN95 Face Mask,KN95 Mask,Cup Masks Breathable 5-Layer Filter Efficiency\u226595% Disposable Certified Face Mask", "asin": "B08NXBG87C", "price": "$19.99", "quantity": ""},
{"title": "N95 Mask NIOSH Approved 25-Pack, Particulate Respirator N95 Face Masks Universal Fit - Individually Wrapped", "asin": "B09FZ7HVV9", "price": "$14.21", "quantity": ""},
{"title": "N95 Mask - NIOSH Approved (White, Pack of 10), Lightweight design, Breathable and comfortable for long periods of wear, N95 Masks For Adults helps filter Pollen and Dust, Universal Fit", "asin": "B0B9DMYPKT", "price": "$21.99", "quantity": ""},
{"title": "KN95 Face Mask 30pcs Disposable Face Masks Individual Packed Safety 5 Layers Breathable Cup Dust Masks Filtration>95%", "asin": "B08NX789VB", "price": "$16.99", "quantity": ""}],
"ads": [{"title": "LEVENIS KN95 Face Masks 50 Pack, Breathable Comfortable and Disposable KN95 Mask, Black", "asin": "B08VJM6VZC"}],
"search_results": [{"title": "N95 Mask NIOSH Approved 25-Pack, Particulate Respirator N95 Face Masks Universal Fit - Individually Wrapped", "asin": "B09FZ7HVV9", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "BNX N95 Mask NIOSH Certified MADE IN USA Particulate Respirator Protective Face Mask (10-Pack, Approval Number TC-84A-9315 / Model H95W) White", "asin": "B08YS4958R", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "LEMENT 50pcs KN95 Face Mask Black 5 Layer Cup Dust Safety Masks Filter Efficiency\u226595% Breathable Elastic Ear Loops Black Masks", "asin": "B08Y8NVW6Y", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "3M N95 Respirator 8511, Cool Flow Valve, 10 Pack, NIOSH-APPROVED, Advanced Filter Media For Easy Breathing, Comfortable For Long Periods Of Wear, Helps Filter Pollen, Mold Spores & Dust (8511PB1-A-PS)", "asin": "B0002YKBV2", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "HALIDODO 60 Packs Individually Wrapped KN95 Face Mask 5-Ply Breathable & Comfortable Filter Safety Mask with Elastic Ear loop and Nose Bridge Clip, Protective Face Cover Mask, Multi Color", "asin": "B09365C9ZL", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "HUHETA KN95 Face Masks, Packs of 30 Individually Wrapped, 5-Ply Breathable and Comfortable Safety Mask, Filter Efficiency Over 95%, Protective Cup Dust Masks Against PM2.5 (Black Mask)", "asin": "B08M6GWRGL", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "N95 Mask NIOSH Approved 25-Pack, Particulate Respirator N95 Face Masks Universal Fit - Individually Wrapped", "asin": "B09FZ7HVV9", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "Funight KN95 Face Masks 50 Pack for Adults, Breathable and Comfortable KN95 Mask with Elastic Ear Loop, Filter Efficiency\u226595%, Black", "asin": "B0CY4SYXZX", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "KN95 Face Mask Pack of 10 Fold Flat Masks Comfortable Fit", "asin": "B089P1RC2K", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "Boncare KN95 Face Mask 30 PCs, 5-Layer Black Face Mask for Men & Women Filter Efficiency\u2265 95%, Breathable and Comfortable, Black", "asin": "B08V59764B", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "3M Aura Particulate Respirator 9205+ N95, Lightweight, 3 Panel Designed Helps Provide Comfortable and Convenient Respiratory Protection, 3-Pack", "asin": "B095DZQ5MX", "delivery": " Two-Day FREE delivery Thu, Apr 24 Only 13 left in stock - order soon."},
{"title": "3M Aura Particulate Respirator 9205+, N95, Pack of 20 Disposable Respirators, Individually Wrapped, 3 Panel Flat Fold Design Allows for Facial Movements, Comfortable, NIOSH Approved, Smoke", "asin": "B09FM2P1KF", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "KN95 Face Mask 30pcs Disposable Face Masks Individual Packed Safety 5 Layers Breathable Cup Dust Masks Filtration>95%", "asin": "B08NX6FW9F", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "3M Aura Particulate N95 Respirator 9205+, Flat Fold Lightweight Design, Non-Valved, 20 Count (Pack of 1)", "asin": "B095FJ36H2", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "LEMENT KN95 Face Masks,50 Pack Breathable Cup Dust Disposable Masks For Adult,Teenager", "asin": "B0DRCLQVPP", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "LEVENIS KN95 Face Masks 50 Pack, Breathable Comfortable and Disposable KN95 Mask, Black", "asin": "B08VJM6VZC", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "3M Particulate Respirator Lightweight with Cushioning Nose Foam", "asin": "B008MCUZZS", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "AccuMed BNX N95 Mask Black NIOSH Certified MADE IN USA Particulate Respirator Protective Face Mask (20-Pack, Approval Number TC-84A-9315 / Model H95B) Black", "asin": "B097HYFCN5", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "3M N95 Respirator 8511, 10 Pack, NIOSH-APPROVED N95, Features 3M COOL FLOW Exhalation Valve, Relief From Dusts & Certain Particles During Sanding, Pollen, Mold Spores, Dust Particles (8511DB1-A-PS)", "asin": "B007ZUDVC2", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "HUHETA KN95 Face Masks, Packs of 30 Individually Wrapped, 5-Ply Breathable and Comfortable Safety Mask, Filter Efficiency Over 95%, Protective Cup Dust Masks Against PM2.5 (Black Mask)", "asin": "B08M6GWRGL", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "Funight KN95 Face Masks 50 Pack 5-Ply Breathable Filter Disposable Face Masks Black", "asin": "B09GLY1S79", "delivery": " Two-Day FREE delivery Thu, Apr 24"}]
<|observation_end|>

# Output Format
Please provide your final answer in JSON format within <answer></answer> tags using the following schema (Note that the thinking process should be within 250 words and give enough output space for final answer):
"<answer>
{
"timestamp": "2025-04-23T05:50:55.823Z", // the timestamp when this action occurs.
"action": "string", // select one plausible action from: input, click_product, purchase, or click.
"acion_argument": "string", // select appropriate value based on action type: input_text, product_asin, clickable_name.
}
</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 UI interface button or clickable element on the Amazon website.
Action Argument: The clickable_name is one of the UI interface buttons or clickable elements including "review", "search", "product_option", "other", "nav_bar", "quantity", "page_related", "suggested_term", "cart_side_bar", "cart_page_select", and "filter". Select one of these buttons or clickable elements as action argument.
{
"timestamp": "timestamp",
"action": "click",
"action_argument": "clickable_name",
}

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|>
<|memory_end|>

<|action_start|>
{"timestamp": "2025-04-23T05:50:15.921Z", "action": "input", "action_argument": "mask n95"}
<|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.
"promotion_items": [{"title": "BLScode KN95 Face Mask 60 Pack,Individually Wrapped 5-Layer face Masks,Filter Efficiency\u226595%", "asin": "B09FJT8R2G", "price": "$24.99", "quantity": ""},
{"title": "Shawmut Protex\u2122 N95 Mask, Made in the USA NIOSH Approved, Particulate Respirators, Protective Face Mask", "asin": "B09GWFNFS7", "price": "$18.49", "quantity": ""},
{"title": "KN95 Face Mask,KN95 Mask,Cup Masks Breathable 5-Layer Filter Efficiency\u226595% Disposable Certified Face Mask", "asin": "B08NXBG87C", "price": "$19.99", "quantity": ""},
{"title": "N95 Mask - NIOSH Approved (White, Pack of 10), Lightweight design, Breathable and comfortable for long periods of wear, N95 Masks For Adults helps filter Pollen and Dust, Universal Fit", "asin": "B0B9DMYPKT", "price": "$21.99", "quantity": ""},
{"title": "HALIDODO 60 Packs Individually Wrapped KN95 Face Mask 5-Ply Breathable & Comfortable Filter Safety Mask with Elastic Ear loop and Nose Bridge Clip, Protective Face Cover Mask, Multi Color", "asin": "B09365C9ZL", "price": "$17.99", "quantity": ""},
{"title": "Shawmut Protex\u2122 N95 Mask, Made in the USA NIOSH Approved, Particulate Respirators, Protective Face Mask", "asin": "B09GWFNFS7", "price": "$18.49", "quantity": ""},
{"title": "KN95 Face Mask,KN95 Mask,Cup Masks Breathable 5-Layer Filter Efficiency\u226595% Disposable Certified Face Mask", "asin": "B08NXBG87C", "price": "$19.99", "quantity": ""},
{"title": "N95 Mask NIOSH Approved 25-Pack, Particulate Respirator N95 Face Masks Universal Fit - Individually Wrapped", "asin": "B09FZ7HVV9", "price": "$14.21", "quantity": ""},
{"title": "N95 Mask - NIOSH Approved (White, Pack of 10), Lightweight design, Breathable and comfortable for long periods of wear, N95 Masks For Adults helps filter Pollen and Dust, Universal Fit", "asin": "B0B9DMYPKT", "price": "$21.99", "quantity": ""},
{"title": "KN95 Face Mask 30pcs Disposable Face Masks Individual Packed Safety 5 Layers Breathable Cup Dust Masks Filtration>95%", "asin": "B08NX789VB", "price": "$16.99", "quantity": ""}],
"ads": [{"title": "LEVENIS KN95 Face Masks 50 Pack, Breathable Comfortable and Disposable KN95 Mask, Black", "asin": "B08VJM6VZC"}],
"search_results": [{"title": "N95 Mask NIOSH Approved 25-Pack, Particulate Respirator N95 Face Masks Universal Fit - Individually Wrapped", "asin": "B09FZ7HVV9", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "BNX N95 Mask NIOSH Certified MADE IN USA Particulate Respirator Protective Face Mask (10-Pack, Approval Number TC-84A-9315 / Model H95W) White", "asin": "B08YS4958R", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "LEMENT 50pcs KN95 Face Mask Black 5 Layer Cup Dust Safety Masks Filter Efficiency\u226595% Breathable Elastic Ear Loops Black Masks", "asin": "B08Y8NVW6Y", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "3M N95 Respirator 8511, Cool Flow Valve, 10 Pack, NIOSH-APPROVED, Advanced Filter Media For Easy Breathing, Comfortable For Long Periods Of Wear, Helps Filter Pollen, Mold Spores & Dust (8511PB1-A-PS)", "asin": "B0002YKBV2", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "HALIDODO 60 Packs Individually Wrapped KN95 Face Mask 5-Ply Breathable & Comfortable Filter Safety Mask with Elastic Ear loop and Nose Bridge Clip, Protective Face Cover Mask, Multi Color", "asin": "B09365C9ZL", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "HUHETA KN95 Face Masks, Packs of 30 Individually Wrapped, 5-Ply Breathable and Comfortable Safety Mask, Filter Efficiency Over 95%, Protective Cup Dust Masks Against PM2.5 (Black Mask)", "asin": "B08M6GWRGL", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "N95 Mask NIOSH Approved 25-Pack, Particulate Respirator N95 Face Masks Universal Fit - Individually Wrapped", "asin": "B09FZ7HVV9", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "Funight KN95 Face Masks 50 Pack for Adults, Breathable and Comfortable KN95 Mask with Elastic Ear Loop, Filter Efficiency\u226595%, Black", "asin": "B0CY4SYXZX", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "KN95 Face Mask Pack of 10 Fold Flat Masks Comfortable Fit", "asin": "B089P1RC2K", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "Boncare KN95 Face Mask 30 PCs, 5-Layer Black Face Mask for Men & Women Filter Efficiency\u2265 95%, Breathable and Comfortable, Black", "asin": "B08V59764B", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "3M Aura Particulate Respirator 9205+ N95, Lightweight, 3 Panel Designed Helps Provide Comfortable and Convenient Respiratory Protection, 3-Pack", "asin": "B095DZQ5MX", "delivery": " Two-Day FREE delivery Thu, Apr 24 Only 13 left in stock - order soon."},
{"title": "3M Aura Particulate Respirator 9205+, N95, Pack of 20 Disposable Respirators, Individually Wrapped, 3 Panel Flat Fold Design Allows for Facial Movements, Comfortable, NIOSH Approved, Smoke", "asin": "B09FM2P1KF", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "KN95 Face Mask 30pcs Disposable Face Masks Individual Packed Safety 5 Layers Breathable Cup Dust Masks Filtration>95%", "asin": "B08NX6FW9F", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "3M Aura Particulate N95 Respirator 9205+, Flat Fold Lightweight Design, Non-Valved, 20 Count (Pack of 1)", "asin": "B095FJ36H2", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "LEMENT KN95 Face Masks,50 Pack Breathable Cup Dust Disposable Masks For Adult,Teenager", "asin": "B0DRCLQVPP", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "LEVENIS KN95 Face Masks 50 Pack, Breathable Comfortable and Disposable KN95 Mask, Black", "asin": "B08VJM6VZC", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "3M Particulate Respirator Lightweight with Cushioning Nose Foam", "asin": "B008MCUZZS", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "AccuMed BNX N95 Mask Black NIOSH Certified MADE IN USA Particulate Respirator Protective Face Mask (20-Pack, Approval Number TC-84A-9315 / Model H95B) Black", "asin": "B097HYFCN5", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "3M N95 Respirator 8511, 10 Pack, NIOSH-APPROVED N95, Features 3M COOL FLOW Exhalation Valve, Relief From Dusts & Certain Particles During Sanding, Pollen, Mold Spores, Dust Particles (8511DB1-A-PS)", "asin": "B007ZUDVC2", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "HUHETA KN95 Face Masks, Packs of 30 Individually Wrapped, 5-Ply Breathable and Comfortable Safety Mask, Filter Efficiency Over 95%, Protective Cup Dust Masks Against PM2.5 (Black Mask)", "asin": "B08M6GWRGL", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "Funight KN95 Face Masks 50 Pack 5-Ply Breathable Filter Disposable Face Masks Black", "asin": "B09GLY1S79", "delivery": " Two-Day FREE delivery Thu, Apr 24"}]
<|observation_end|>

# Output Format
Please provide your final answer in JSON format within <answer></answer> tags using the following schema (Note that the thinking process should be within 250 words and give enough output space for final answer):
"<answer>
{
"timestamp": "2025-04-23T05:50:55.823Z", // the timestamp when this action occurs.
"action": "string", // select one plausible action from: input, click_product, purchase, or click.
"acion_argument": "string", // select appropriate value based on action type: input_text, product_asin, clickable_name.
}
</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 UI interface button or clickable element on the Amazon website.
Action Argument: The clickable_name is one of the UI interface buttons or clickable elements including "review", "search", "product_option", "other", "nav_bar", "quantity", "page_related", "suggested_term", "cart_side_bar", "cart_page_select", and "filter". Select one of these buttons or clickable elements as action argument.
{
"timestamp": "timestamp",
"action": "click",
"action_argument": "clickable_name",
}

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|>
<|memory_end|>

<|action_start|>
{"timestamp": "2025-04-23T05:50:15.921Z", "action": "input", "action_argument": "mask n95"}
<|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.
"promotion_items": [{"title": "BLScode KN95 Face Mask 60 Pack,Individually Wrapped 5-Layer face Masks,Filter Efficiency\u226595%", "asin": "B09FJT8R2G", "price": "$24.99", "quantity": ""},
{"title": "Shawmut Protex\u2122 N95 Mask, Made in the USA NIOSH Approved, Particulate Respirators, Protective Face Mask", "asin": "B09GWFNFS7", "price": "$18.49", "quantity": ""},
{"title": "KN95 Face Mask,KN95 Mask,Cup Masks Breathable 5-Layer Filter Efficiency\u226595% Disposable Certified Face Mask", "asin": "B08NXBG87C", "price": "$19.99", "quantity": ""},
{"title": "N95 Mask - NIOSH Approved (White, Pack of 10), Lightweight design, Breathable and comfortable for long periods of wear, N95 Masks For Adults helps filter Pollen and Dust, Universal Fit", "asin": "B0B9DMYPKT", "price": "$21.99", "quantity": ""},
{"title": "HALIDODO 60 Packs Individually Wrapped KN95 Face Mask 5-Ply Breathable & Comfortable Filter Safety Mask with Elastic Ear loop and Nose Bridge Clip, Protective Face Cover Mask, Multi Color", "asin": "B09365C9ZL", "price": "$17.99", "quantity": ""},
{"title": "Shawmut Protex\u2122 N95 Mask, Made in the USA NIOSH Approved, Particulate Respirators, Protective Face Mask", "asin": "B09GWFNFS7", "price": "$18.49", "quantity": ""},
{"title": "KN95 Face Mask,KN95 Mask,Cup Masks Breathable 5-Layer Filter Efficiency\u226595% Disposable Certified Face Mask", "asin": "B08NXBG87C", "price": "$19.99", "quantity": ""},
{"title": "N95 Mask NIOSH Approved 25-Pack, Particulate Respirator N95 Face Masks Universal Fit - Individually Wrapped", "asin": "B09FZ7HVV9", "price": "$14.21", "quantity": ""},
{"title": "N95 Mask - NIOSH Approved (White, Pack of 10), Lightweight design, Breathable and comfortable for long periods of wear, N95 Masks For Adults helps filter Pollen and Dust, Universal Fit", "asin": "B0B9DMYPKT", "price": "$21.99", "quantity": ""},
{"title": "KN95 Face Mask 30pcs Disposable Face Masks Individual Packed Safety 5 Layers Breathable Cup Dust Masks Filtration>95%", "asin": "B08NX789VB", "price": "$16.99", "quantity": ""}],
"ads": [{"title": "LEVENIS KN95 Face Masks 50 Pack, Breathable Comfortable and Disposable KN95 Mask, Black", "asin": "B08VJM6VZC"}],
"search_results": [{"title": "N95 Mask NIOSH Approved 25-Pack, Particulate Respirator N95 Face Masks Universal Fit - Individually Wrapped", "asin": "B09FZ7HVV9", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "BNX N95 Mask NIOSH Certified MADE IN USA Particulate Respirator Protective Face Mask (10-Pack, Approval Number TC-84A-9315 / Model H95W) White", "asin": "B08YS4958R", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "LEMENT 50pcs KN95 Face Mask Black 5 Layer Cup Dust Safety Masks Filter Efficiency\u226595% Breathable Elastic Ear Loops Black Masks", "asin": "B08Y8NVW6Y", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "3M N95 Respirator 8511, Cool Flow Valve, 10 Pack, NIOSH-APPROVED, Advanced Filter Media For Easy Breathing, Comfortable For Long Periods Of Wear, Helps Filter Pollen, Mold Spores & Dust (8511PB1-A-PS)", "asin": "B0002YKBV2", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "HALIDODO 60 Packs Individually Wrapped KN95 Face Mask 5-Ply Breathable & Comfortable Filter Safety Mask with Elastic Ear loop and Nose Bridge Clip, Protective Face Cover Mask, Multi Color", "asin": "B09365C9ZL", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "HUHETA KN95 Face Masks, Packs of 30 Individually Wrapped, 5-Ply Breathable and Comfortable Safety Mask, Filter Efficiency Over 95%, Protective Cup Dust Masks Against PM2.5 (Black Mask)", "asin": "B08M6GWRGL", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "N95 Mask NIOSH Approved 25-Pack, Particulate Respirator N95 Face Masks Universal Fit - Individually Wrapped", "asin": "B09FZ7HVV9", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "Funight KN95 Face Masks 50 Pack for Adults, Breathable and Comfortable KN95 Mask with Elastic Ear Loop, Filter Efficiency\u226595%, Black", "asin": "B0CY4SYXZX", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "KN95 Face Mask Pack of 10 Fold Flat Masks Comfortable Fit", "asin": "B089P1RC2K", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "Boncare KN95 Face Mask 30 PCs, 5-Layer Black Face Mask for Men & Women Filter Efficiency\u2265 95%, Breathable and Comfortable, Black", "asin": "B08V59764B", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "3M Aura Particulate Respirator 9205+ N95, Lightweight, 3 Panel Designed Helps Provide Comfortable and Convenient Respiratory Protection, 3-Pack", "asin": "B095DZQ5MX", "delivery": " Two-Day FREE delivery Thu, Apr 24 Only 13 left in stock - order soon."},
{"title": "3M Aura Particulate Respirator 9205+, N95, Pack of 20 Disposable Respirators, Individually Wrapped, 3 Panel Flat Fold Design Allows for Facial Movements, Comfortable, NIOSH Approved, Smoke", "asin": "B09FM2P1KF", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "KN95 Face Mask 30pcs Disposable Face Masks Individual Packed Safety 5 Layers Breathable Cup Dust Masks Filtration>95%", "asin": "B08NX6FW9F", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "3M Aura Particulate N95 Respirator 9205+, Flat Fold Lightweight Design, Non-Valved, 20 Count (Pack of 1)", "asin": "B095FJ36H2", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "LEMENT KN95 Face Masks,50 Pack Breathable Cup Dust Disposable Masks For Adult,Teenager", "asin": "B0DRCLQVPP", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "LEVENIS KN95 Face Masks 50 Pack, Breathable Comfortable and Disposable KN95 Mask, Black", "asin": "B08VJM6VZC", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "3M Particulate Respirator Lightweight with Cushioning Nose Foam", "asin": "B008MCUZZS", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "AccuMed BNX N95 Mask Black NIOSH Certified MADE IN USA Particulate Respirator Protective Face Mask (20-Pack, Approval Number TC-84A-9315 / Model H95B) Black", "asin": "B097HYFCN5", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "3M N95 Respirator 8511, 10 Pack, NIOSH-APPROVED N95, Features 3M COOL FLOW Exhalation Valve, Relief From Dusts & Certain Particles During Sanding, Pollen, Mold Spores, Dust Particles (8511DB1-A-PS)", "asin": "B007ZUDVC2", "delivery": " Two-Day FREE delivery Thu, Apr 24"},
{"title": "HUHETA KN95 Face Masks, Packs of 30 Individually Wrapped, 5-Ply Breathable and Comfortable Safety Mask, Filter Efficiency Over 95%, Protective Cup Dust Masks Against PM2.5 (Black Mask)", "asin": "B08M6GWRGL", "delivery": " One-Day FREE delivery Tomorrow, Apr 23"},
{"title": "Funight KN95 Face Masks 50 Pack 5-Ply Breathable Filter Disposable Face Masks Black", "asin": "B09GLY1S79", "delivery": " Two-Day FREE delivery Thu, Apr 24"}]
<|observation_end|>

# Output Format
Please provide your final answer in JSON format within <answer></answer> tags using the following schema (Note that the thinking process should be within 250 words and give enough output space for final answer):
"<answer>
{
"timestamp": "2025-04-23T05:50:55.823Z", // the timestamp when this action occurs.
"action": "string", // select one plausible action from: input, click_product, purchase, or click.
"acion_argument": "string", // select appropriate value based on action type: input_text, product_asin, clickable_name.
}
</answer>"

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