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": "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"}}}, {"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": "evaluate", "description": "Evaluates a mathematical expression using the given variables and their values through the RapidAPI service.", "parameters": {"variables": {"description": "A comma-separated string listing the variables used in the expression.", "type": "str", "default": ""}, "values": {"description": "A comma-separated string listing the values corresponding to the variables.", "type": "str", "default": ""}, "expression": {"description": "The mathematical expression to be evaluated.", "type": "str", "default": ""}}}, {"name": "search", "description": "Searches for the given query using the CrossRef API and returns the results.", "parameters": {"query": {"description": "The search query string.", "type": "str", "default": "blood"}}}]
Calculate the CO2 emissions from a 100km eco bus ride and a 50km subway journey. Also, find the vehicle models for Ford and Chevrolet.
user
assistant
[{"name": "carbonfootprintfrompublictransit", "arguments": {"distance": "100", "type": "EcoBus"}}, {"name": "carbonfootprintfrompublictransit", "arguments": {"distance": "50", "type": "Subway"}}, {"name": "vehicles_models", "arguments": {"vehicle_make": "Ford"}}, {"name": "vehicles_models", "arguments": {"vehicle_make": "Chevrolet"}}]