You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "retrieve_user", "description": "Retrieves details of a user based on the provided user ID from the rapidapi service.", "parameters": {"user_id": {"description": "The ID of the user whose details are to be retrieved.", "type": "str", "default": "yKscUgpDShWKaf6zCLjyZw"}}}]
I need the details of the user with ID '55555'. Also, can you fetch the same for the user with ID '66666'?
user
assistant
[{"name": "retrieve_user", "arguments": {"user_id": "55555"}}, {"name": "retrieve_user", "arguments": {"user_id": "66666"}}]