system: 
You are an expert in composing functions. You are given a question and a set of possible functions.
Based on the question, you will need to make one or more function/tool calls to achieve the purpose.
If none of the function can be used, point it out. If the given question lacks the parameters required by the function,
also point it out. You should only return the function call in tools call sections.

If you decide to invoke any of the function(s), you MUST put it in the format of [func_name1(params_name1=params_value1, params_name2=params_value2...), func_name2(params)]

You SHOULD NOT include any other text in the response.

Here is a list of functions in JSON format that you can invoke.

[{'name': 'RentalCars_3_GetCarsAvailable', 'description': 'Retrieve a list of available rental cars in a specified city during a given rental period. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['city', 'start_date', 'end_date', 'pickup_time'], 'properties': {'city': {'type': 'string', 'description': "The city where the rental car will be picked up, in the format of 'City, State', such as 'Los Angeles, CA' or 'New York, NY'."}, 'start_date': {'type': 'string', 'description': 'The start date for the car rental in the format YYYY-MM-DD.'}, 'end_date': {'type': 'string', 'description': 'The end date for the car rental in the format YYYY-MM-DD.'}, 'pickup_time': {'type': 'string', 'description': 'The pick-up time for the rental car in 24-hour format HH:MM.'}, 'car_type': {'type': 'string', 'description': 'The desired type of rental car.', 'enum': ['Hatchback', 'Sedan', 'SUV', 'dontcare'], 'default': 'dontcare'}}}}, {'name': 'RentalCars_3_ReserveCar', 'description': 'Creates a reservation for a rental car within the specified dates, times, and preferences. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['pickup_location', 'start_date', 'pickup_time', 'end_date', 'car_type', 'add_insurance'], 'properties': {'pickup_location': {'type': 'string', 'description': "The location where the car will be picked up, in the format of 'City, State', such as 'Los Angeles, CA'."}, 'start_date': {'type': 'string', 'description': "The start date for the car rental in the format 'YYYY-MM-DD'."}, 'pickup_time': {'type': 'string', 'description': "The time of day when the car will be picked up, in 24-hour format 'HH:MM'."}, 'end_date': {'type': 'string', 'description': "The end date for the car rental in the format 'YYYY-MM-DD'."}, 'car_type': {'type': 'string', 'description': 'The preferred type of car for the rental.', 'enum': ['Hatchback', 'Sedan', 'SUV', 'dontcare']}, 'add_insurance': {'type': 'boolean', 'description': 'Whether additional insurance should be purchased.'}}}}]


user: Can you find me available rental cars in Los Angeles from April 15, 2023, to April 20, 2023, picking up at 10:00?

Available functions:
[{"name": "RentalCars_3_GetCarsAvailable", "description": "Retrieve a list of available rental cars in a specified city during a given rental period.", "parameters": {"type": "dict", "required": ["city", "start_date", "end_date", "pickup_time"], "properties": {"city": {"type": "string", "description": "The city where the rental car will be picked up, in the format of 'City, State', such as 'Los Angeles, CA' or 'New York, NY'."}, "start_date": {"type": "string", "description": "The start date for the car rental in the format YYYY-MM-DD."}, "end_date": {"type": "string", "description": "The end date for the car rental in the format YYYY-MM-DD."}, "pickup_time": {"type": "string", "description": "The pick-up time for the rental car in 24-hour format HH:MM."}, "car_type": {"type": "string", "description": "The desired type of rental car.", "enum": ["Hatchback", "Sedan", "SUV", "dontcare"], "default": "dontcare"}}}}, {"name": "RentalCars_3_ReserveCar", "description": "Creates a reservation for a rental car within the specified dates, times, and preferences.", "parameters": {"type": "dict", "required": ["pickup_location", "start_date", "pickup_time", "end_date", "car_type", "add_insurance"], "properties": {"pickup_location": {"type": "string", "description": "The location where the car will be picked up, in the format of 'City, State', such as 'Los Angeles, CA'."}, "start_date": {"type": "string", "description": "The start date for the car rental in the format 'YYYY-MM-DD'."}, "pickup_time": {"type": "string", "description": "The time of day when the car will be picked up, in 24-hour format 'HH:MM'."}, "end_date": {"type": "string", "description": "The end date for the car rental in the format 'YYYY-MM-DD'."}, "car_type": {"type": "string", "description": "The preferred type of car for the rental.", "enum": ["Hatchback", "Sedan", "SUV", "dontcare"]}, "add_insurance": {"type": "boolean", "description": "Whether additional insurance should be purchased."}}}}]

Ground-truth function call:
[{"RentalCars_3_GetCarsAvailable": {"city": ["Los Angeles, CA"], "start_date": ["2023-04-15"], "end_date": ["2023-04-20"], "pickup_time": ["10:00"], "car_type": ["", "dontcare"]}}]