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": "get_role_ids", "description": "Retrieves details for a specific document from the signNow API.", "parameters": {"document_id": {"description": "The unique identifier for the document.", "type": "str", "default": ""}}}, {"name": "getuserbyname", "description": "Fetches user details by username from the specified API endpoint using the provided RapidAPI key.", "parameters": {"username": {"description": "The username of the user to fetch details for.", "type": "str", "default": ""}}}, {"name": "companies_id_financials", "description": "Retrieves the financial key figures (balance sheet total, revenue, profit, number of employees) for a company with the given identifier.", "parameters": {"is_id": {"description": "The identifier of the company for which financial data is to be retrieved.", "type": "str", "default": "DEVFCLQFW054"}}}]
Get the user details for the username 'john_doe' using the specified API endpoint and RapidAPI key.
user
assistant
[{"name": "getuserbyname", "arguments": {"username": "john_doe"}}]