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': 'Events_3_FindEvents', 'description': 'Find cultural events, such as concerts and plays, happening in a specified city on a given date. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['event_type', 'city'], 'properties': {'event_type': {'type': 'string', 'description': 'The type of cultural event to find. Events include concerts and plays.', 'enum': ['Music', 'Theater']}, 'city': {'type': 'string', 'description': "The city where the event is taking place, in the format 'City, State' or 'City, Country' (e.g., 'New York, NY' or 'London, UK')."}, 'date': {'type': 'string', 'description': "The date of the event. Use the format 'YYYY-MM-DD'. If not specified, the current date is used.", 'default': None}}}}, {'name': 'Events_3_BuyEventTickets', 'description': 'Purchase tickets for a specific cultural event on a chosen date in a specified city. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['event_name', 'number_of_tickets', 'date', 'city'], 'properties': {'event_name': {'type': 'string', 'description': "The official title of the event, such as an artist's name or a play title."}, 'number_of_tickets': {'type': 'integer', 'description': 'The quantity of tickets to be reserved, must be an integer from 1 to 9.', 'enum': ['1', '2', '3', '4', '5', '6', '7', '8', '9']}, 'date': {'type': 'string', 'description': "The date of the event, formatted as 'YYYY-MM-DD'."}, 'city': {'type': 'string', 'description': "The name of the city where the event will take place, formatted as 'City, State' (e.g., 'New York, NY')."}}}}, {'name': 'RideSharing_2_GetRide', 'description': 'Book a cab ride to the specified destination with a choice of the number of seats and ride type. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['destination', 'number_of_seats', 'ride_type'], 'properties': {'destination': {'type': 'string', 'description': "The exact address or location for the cab to arrive at, in the format 'Street, City, State, Zip'. For example, '123 Main St, Springfield, IL, 62701'."}, 'number_of_seats': {'type': 'integer', 'description': 'The total number of seats to reserve in the cab.', 'enum': ['1', '2', '3', '4']}, 'ride_type': {'type': 'string', 'description': 'The category of cab service to book.', 'enum': ['Pool', 'Regular', 'Luxury']}}}}]


user: I'm looking for a theater event in London, UK on Apr the 5th. 

Available functions:
[{"name": "Events_3_FindEvents", "description": "Find cultural events, such as concerts and plays, happening in a specified city on a given date.", "parameters": {"type": "dict", "required": ["event_type", "city"], "properties": {"event_type": {"type": "string", "description": "The type of cultural event to find. Events include concerts and plays.", "enum": ["Music", "Theater"]}, "city": {"type": "string", "description": "The city where the event is taking place, in the format 'City, State' or 'City, Country' (e.g., 'New York, NY' or 'London, UK')."}, "date": {"type": "string", "description": "The date of the event. Use the format 'YYYY-MM-DD'. If not specified, the current date is used.", "default": null}}}}, {"name": "Events_3_BuyEventTickets", "description": "Purchase tickets for a specific cultural event on a chosen date in a specified city.", "parameters": {"type": "dict", "required": ["event_name", "number_of_tickets", "date", "city"], "properties": {"event_name": {"type": "string", "description": "The official title of the event, such as an artist's name or a play title."}, "number_of_tickets": {"type": "integer", "description": "The quantity of tickets to be reserved, must be an integer from 1 to 9.", "enum": ["1", "2", "3", "4", "5", "6", "7", "8", "9"]}, "date": {"type": "string", "description": "The date of the event, formatted as 'YYYY-MM-DD'."}, "city": {"type": "string", "description": "The name of the city where the event will take place, formatted as 'City, State' (e.g., 'New York, NY')."}}}}, {"name": "RideSharing_2_GetRide", "description": "Book a cab ride to the specified destination with a choice of the number of seats and ride type.", "parameters": {"type": "dict", "required": ["destination", "number_of_seats", "ride_type"], "properties": {"destination": {"type": "string", "description": "The exact address or location for the cab to arrive at, in the format 'Street, City, State, Zip'. For example, '123 Main St, Springfield, IL, 62701'."}, "number_of_seats": {"type": "integer", "description": "The total number of seats to reserve in the cab.", "enum": ["1", "2", "3", "4"]}, "ride_type": {"type": "string", "description": "The category of cab service to book.", "enum": ["Pool", "Regular", "Luxury"]}}}}]

Ground-truth function call:
[{"Events_3_FindEvents": {"event_type": ["Theater"], "city": ["London, UK"], "date": ["2023-04-05"]}}]