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": "user_login", "description": "Logs in a user with the given username and password, and returns a JSON object containing the account's session key.", "parameters": {"username": {"description": "Username for the user account. For US domestic users, this should be a 10-digit number. For international users, use the full E.164 format (e.g., US: 5555555555, E.164: +1155555555555).", "type": "str", "default": ""}, "password": {"description": "Password associated with the username.", "type": "str", "default": ""}}}]
And if I attempt to log in with the username +1255555555555 and password 'pass12345'?
user
assistant
[{"name": "user_login", "arguments": {"username": "+1255555555555", "password": "pass12345"}}]