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": "fueltoco2e", "description": "Converts the given amount of fuel into CO2 equivalent in kilograms.", "parameters": {"type": {"description": "The type of fuel. Valid values are 'Petrol', 'Diesel', 'LPG'.", "type": "str", "default": "Petrol"}, "litres": {"description": "The number of liters of fuel to convert.", "type": "str", "default": "10"}}}]
Can you help me calculate the CO2 equivalent for 50 litres of Diesel and 30 litres of Petrol?
user
assistant
[{"name": "fueltoco2e", "arguments": {"type": "Diesel", "litres": "50"}}, {"name": "fueltoco2e", "arguments": {"type": "Petrol", "litres": "30"}}]