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": "instagram", "description": "Checks the availability of a given Instagram username using RapidAPI.", "parameters": {"username": {"description": "The Instagram username to be checked.", "type": "str", "default": "username"}}}]
Is the username 'john_doe' available on Instagram? And what about 'jane_doe123'?
user
assistant
[{"name": "instagram", "arguments": {"username": "john_doe"}}, {"name": "instagram", "arguments": {"username": "jane_doe123"}}]