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": "us_ar", "description": "Fetches current or historical gas price data for Arkansas.", "parameters": {"date": {"description": "A date string in the format 'YYYY-MM-DD' to query historical gas price data. Defaults to None.", "type": "str, optional", "default": ""}}}]
What is the current gas price in Arkansas?
user
assistant
[{"name": "us_ar", "arguments": {}}]