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": "carriers_detect", "description": "Detects the carrier by providing a parcel tracking number using the TrackingMore API.", "parameters": {"trackingnumber": {"description": "The tracking number of the parcel.", "type": "str", "default": "YT2003521266065328"}}}]
Who is the carrier for the parcel with tracking number '901234567890'?
user
assistant
[{"name": "carriers_detect", "arguments": {"trackingnumber": "901234567890"}}]