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': 'Buses_3_FindBus', 'description': 'Search for a bus itinerary between two cities on a specified date. The search can be filtered based on the number of passengers and the bus route category. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['from_city', 'to_city', 'departure_date'], 'properties': {'from_city': {'type': 'string', 'description': "The city of departure, formatted as 'City, State' (e.g., 'San Francisco, CA')."}, 'to_city': {'type': 'string', 'description': "The destination city, formatted as 'City, State' (e.g., 'Los Angeles, CA')."}, 'departure_date': {'type': 'string', 'description': "The date of departure, formatted as 'MM/DD/YYYY' (e.g., '04/25/2023')."}, 'num_passengers': {'type': 'integer', 'description': 'The number of passengers for which to book the trip. Must be an integer from 1 to 5.', 'enum': ['1', '2', '3', '4', '5'], 'default': '1'}, 'category': {'type': 'string', 'description': 'The type of bus route, indicating the number of stops.', 'enum': ['direct', 'one-stop'], 'default': 'direct'}}}}, {'name': 'Buses_3_BuyBusTicket', 'description': 'This function processes the purchase of bus tickets from a specified departure city to a destination city on a given date and time, for a certain number of passengers with an option to include additional luggage. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['from_city', 'to_city', 'departure_date', 'departure_time'], 'properties': {'from_city': {'type': 'string', 'description': "The city where the journey will start, in the format of 'City, State', such as 'Berkeley, CA' and 'New York, NY'."}, 'to_city': {'type': 'string', 'description': "The destination city for the trip, in the format of 'City, State', such as 'Los Angeles, CA' and 'Chicago, IL'."}, 'departure_date': {'type': 'string', 'description': "The date of departure, in the format of 'YYYY-MM-DD', such as '2023-04-15'."}, 'departure_time': {'type': 'string', 'description': "The time of departure in 24-hour format, such as '14:00' for 2 PM."}, 'num_passengers': {'type': 'integer', 'description': 'The number of passengers for whom the tickets are to be purchased.', 'enum': ['1', '2', '3', '4', '5'], 'default': 1}, 'additional_luggage': {'type': 'boolean', 'description': 'Indicator of whether additional luggage will be carried on the bus.', 'default': False}}}}, {'name': 'Hotels_4_ReserveHotel', 'description': 'Reserves rooms at a specified hotel for given dates. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['place_name', 'check_in_date', 'stay_length', 'location'], 'properties': {'place_name': {'type': 'string', 'description': 'The name of the hotel or accommodation.'}, 'check_in_date': {'type': 'string', 'description': "The start date for the reservation in the format 'YYYY-MM-DD'."}, 'stay_length': {'type': 'integer', 'description': 'The length of the stay in number of days.'}, 'location': {'type': 'string', 'description': "The location of the hotel, in the format of 'City, State', such as 'New York, NY'."}, 'number_of_rooms': {'type': 'string', 'description': 'The number of rooms to reserve.', 'enum': ['1', '2', '3', 'dontcare'], 'default': 'dontcare'}}}}, {'name': 'Hotels_4_SearchHotel', 'description': 'Search for hotels and accommodations within a specified location and filter by preferences such as star rating, smoking policy, and number of rooms. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['location'], 'properties': {'location': {'type': 'string', 'description': "The city or town where the accommodation is sought, in the format of 'City, State' or 'City, Country' if the city does not locate in the United States, such as 'New York, NY' or 'Paris, FR'."}, 'star_rating': {'type': 'string', 'description': "The desired star rating for the accommodation. Select 'dontcare' if no specific rating is required.", 'enum': ['1', '2', '3', '4', '5', 'dontcare'], 'default': 'dontcare'}, 'smoking_allowed': {'type': 'boolean', 'description': 'Indicates whether smoking is permitted inside the accommodation.', 'default': False}, 'number_of_rooms': {'type': 'integer', 'description': "The number of rooms required for the reservation. Choose a positive integer value, or select 'dontcare' to indicate no preference.", 'default': 1}}}}]


user: I need to purchase bus tickets for two people from Berkeley, CA to Portland, OR. We plan to depart on the 15th of May, and we need to leave at 09:00. Also, we will be carrying additional luggage.

Available functions:
[{"name": "Buses_3_FindBus", "description": "Search for a bus itinerary between two cities on a specified date. The search can be filtered based on the number of passengers and the bus route category.", "parameters": {"type": "dict", "required": ["from_city", "to_city", "departure_date"], "properties": {"from_city": {"type": "string", "description": "The city of departure, formatted as 'City, State' (e.g., 'San Francisco, CA')."}, "to_city": {"type": "string", "description": "The destination city, formatted as 'City, State' (e.g., 'Los Angeles, CA')."}, "departure_date": {"type": "string", "description": "The date of departure, formatted as 'MM/DD/YYYY' (e.g., '04/25/2023')."}, "num_passengers": {"type": "integer", "description": "The number of passengers for which to book the trip. Must be an integer from 1 to 5.", "enum": ["1", "2", "3", "4", "5"], "default": "1"}, "category": {"type": "string", "description": "The type of bus route, indicating the number of stops.", "enum": ["direct", "one-stop"], "default": "direct"}}}}, {"name": "Buses_3_BuyBusTicket", "description": "This function processes the purchase of bus tickets from a specified departure city to a destination city on a given date and time, for a certain number of passengers with an option to include additional luggage.", "parameters": {"type": "dict", "required": ["from_city", "to_city", "departure_date", "departure_time"], "properties": {"from_city": {"type": "string", "description": "The city where the journey will start, in the format of 'City, State', such as 'Berkeley, CA' and 'New York, NY'."}, "to_city": {"type": "string", "description": "The destination city for the trip, in the format of 'City, State', such as 'Los Angeles, CA' and 'Chicago, IL'."}, "departure_date": {"type": "string", "description": "The date of departure, in the format of 'YYYY-MM-DD', such as '2023-04-15'."}, "departure_time": {"type": "string", "description": "The time of departure in 24-hour format, such as '14:00' for 2 PM."}, "num_passengers": {"type": "integer", "description": "The number of passengers for whom the tickets are to be purchased.", "enum": ["1", "2", "3", "4", "5"], "default": 1}, "additional_luggage": {"type": "boolean", "description": "Indicator of whether additional luggage will be carried on the bus.", "default": false}}}}, {"name": "Hotels_4_ReserveHotel", "description": "Reserves rooms at a specified hotel for given dates.", "parameters": {"type": "dict", "required": ["place_name", "check_in_date", "stay_length", "location"], "properties": {"place_name": {"type": "string", "description": "The name of the hotel or accommodation."}, "check_in_date": {"type": "string", "description": "The start date for the reservation in the format 'YYYY-MM-DD'."}, "stay_length": {"type": "integer", "description": "The length of the stay in number of days."}, "location": {"type": "string", "description": "The location of the hotel, in the format of 'City, State', such as 'New York, NY'."}, "number_of_rooms": {"type": "string", "description": "The number of rooms to reserve.", "enum": ["1", "2", "3", "dontcare"], "default": "dontcare"}}}}, {"name": "Hotels_4_SearchHotel", "description": "Search for hotels and accommodations within a specified location and filter by preferences such as star rating, smoking policy, and number of rooms.", "parameters": {"type": "dict", "required": ["location"], "properties": {"location": {"type": "string", "description": "The city or town where the accommodation is sought, in the format of 'City, State' or 'City, Country' if the city does not locate in the United States, such as 'New York, NY' or 'Paris, FR'."}, "star_rating": {"type": "string", "description": "The desired star rating for the accommodation. Select 'dontcare' if no specific rating is required.", "enum": ["1", "2", "3", "4", "5", "dontcare"], "default": "dontcare"}, "smoking_allowed": {"type": "boolean", "description": "Indicates whether smoking is permitted inside the accommodation.", "default": false}, "number_of_rooms": {"type": "integer", "description": "The number of rooms required for the reservation. Choose a positive integer value, or select 'dontcare' to indicate no preference.", "default": 1}}}}]

Ground truth: [{"Buses_3_BuyBusTicket": {"from_city": ["Berkeley, CA"], "to_city": ["Portland, OR"], "departure_date": ["2023-05-15"], "departure_time": ["09:00"], "num_passengers": [2], "additional_luggage": [true]}}]