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": "carbonfootprintfromcartravel", "description": "Calculates the CO2 emissions in kilograms from a car journey using a specified vehicle type and distance.", "parameters": {"distance": {"description": "The distance traveled by the car in kilometers.", "type": "str", "default": "100"}, "vehicle": {"description": "The type of car used for the journey. Options include:", "type": "str", "default": "SmallDieselCar"}}}, {"name": "vehicles_models", "description": "Fetches a list of vehicle models for a specified vehicle make using the Carbonsutra API.", "parameters": {"vehicle_make": {"description": "The make of the vehicle to retrieve models for.", "type": "str", "default": ""}}}, {"name": "carbonfootprintfrompublictransit", "description": "Calculates the CO2 emissions in kilograms from the use of public transportation based on the distance traveled and type of transit.", "parameters": {"distance": {"description": "The distance traveled in kilometers.", "type": "str", "default": "1000"}, "type": {"description": "The type of transportation, one of: 'Taxi', 'ClassicBus', 'EcoBus', 'Coach', 'NationalTrain', 'LightRail', 'Subway', 'FerryOnFoot', 'FerryInCar'.", "type": "str", "default": "Taxi"}}}]
What are the vehicle models available for the make 'Mercedes Benz' and what is the CO2 emission from a journey of 400 kilometers using a medium LPG car?
user
assistant
[{"name": "vehicles_models", "arguments": {"vehicle_make": "Mercedes Benz"}}, {"name": "carbonfootprintfromcartravel", "arguments": {"distance": "400", "vehicle": "MediumLPGCar"}}]