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": "minecraft", "description": "Check if a given Minecraft username is available using the Toolbench RapidAPI service.", "parameters": {"username": {"description": "The Minecraft username to be checked for availability.", "type": "str", "default": "username"}}}]
Determine if 'ExpertSurvivor7' and 'ProRedstone8' are valid Minecraft usernames.
user
assistant
[{"name": "minecraft", "arguments": {"username": "ExpertSurvivor7"}}, {"name": "minecraft", "arguments": {"username": "ProRedstone8"}}]