def get_ticket_info(ticket_id: str) -> str:
  """Retrieve the information of a support ticket.

  current status of a support ticket.

  Args:
      ticket_id (str): The unique identifier of the ticket.

  Returns:
      A dictionary contains the following fields, or 'Ticket not found' if the
      ticket_id does not exist:
        - "ticket_id": str, the current ticket id
        - "user_id": str, the associated user id
        - "issue": str, the issue type
        - "status": The current status of the ticket (e.g., 'OPEN', 'CLOSED',
        'ESCALATED')

      Example: {"ticket_id": "1", "user_id": "user_a", "issue": "Login issue",
      "status": "OPEN"}
  """
  for ticket in TICKET_DB:
    if ticket["ticket_id"] == ticket_id:
      return ticket
  return "Ticket not found"
Retrieve the information of a support ticket.

  current status of a support ticket.

  Args:
      ticket_id (str): The unique identifier of the ticket.

  Returns:
      A dictionary contains the following fields, or 'Ticket not found' if the
      ticket_id does not exist:
        - "ticket_id": str, the current ticket id
        - "user_id": str, the associated user id
        - "issue": str, the issue type
        - "status": The current status of the ticket (e.g., 'OPEN', 'CLOSED',
        'ESCALATED')

      Example: {"ticket_id": "1", "user_id": "user_a", "issue": "Login issue",
      "status": "OPEN"}
  
tests/integration/fixture/ecommerce_customer_service_agent/agent.py