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": "loginuser", "description": "Logs a user into the Pet Store API using the provided credentials.", "parameters": {"password": {"description": "The password for logging in.", "type": "str", "default": ""}, "username": {"description": "The username for logging in.", "type": "str", "default": ""}}}]
Log in as user 'ivy' with password 'pass123'. Then log in as user 'jack' with password 'word456'.
user
assistant
[{"name": "loginuser", "arguments": {"password": "pass123", "username": "ivy"}}, {"name": "loginuser", "arguments": {"password": "word456", "username": "jack"}}]