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": "gameslist", "description": "Retrieves a list of games on special discount offers from the specified region.", "parameters": {"region": {"description": "The region code to fetch the game offers from.", "type": "str", "default": "US"}, "start": {"description": "The starting index for the list of games.", "type": "int", "default": "0"}, "count": {"description": "The number of games to retrieve starting from the `start` index.", "type": "int", "default": "10"}}}, {"name": "get_username_point_blank", "description": "Fetch the username associated with a given Point Blank ID using the RapidAPI service.", "parameters": {"is_id": {"description": "The Point Blank ID to look up.", "type": "str", "default": "blackforster"}}}]
What is the username for Point Blank ID 'PB55667788'?
user
assistant
[{"name": "get_username_point_blank", "arguments": {"is_id": "PB55667788"}}]