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': 'Payment_1_RequestPayment', 'description': 'This function initiates a payment request to a specified receiver for a certain amount. It allows setting the visibility of the transaction to private or public. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['receiver', 'amount'], 'properties': {'receiver': {'type': 'string', 'description': 'The name or identifier of the contact or account to which the payment request is sent.'}, 'amount': {'type': 'float', 'description': 'The monetary value to be requested, specified in dollars.'}, 'private_visibility': {'type': 'boolean', 'description': 'Indicates if the transaction should be hidden from public transaction feeds. When set to true, the transaction is private.', 'default': False}}}}, {'name': 'Payment_1_MakePayment', 'description': 'Initiate a transaction to send a specified amount of money to a friend or contact using a chosen payment method. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['payment_method', 'amount', 'receiver'], 'properties': {'payment_method': {'type': 'string', 'description': 'The payment source to use for the transaction, such as a balance within the app or a linked bank card.', 'enum': ['app balance', 'debit card', 'credit card']}, 'amount': {'type': 'float', 'description': 'The monetary value to send, specified in the currency used by the payment platform.'}, 'receiver': {'type': 'string', 'description': 'The identifier of the contact or account to receive the payment. This could be a username, phone number, or email address.'}, 'private_visibility': {'type': 'boolean', 'description': 'A flag indicating whether the transaction should be hidden from public transaction feeds.', 'default': False}}}}, {'name': 'Restaurants_2_ReserveRestaurant', 'description': 'Make a table reservation at a restaurant. The function allows specifying the restaurant name, location, reservation time, number of seats, and date. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['restaurant_name', 'location', 'time'], 'properties': {'restaurant_name': {'type': 'string', 'description': 'The name of the restaurant for the reservation.'}, 'location': {'type': 'string', 'description': "The location of the restaurant, in the format of 'City, State', such as 'Berkeley, CA' or 'New York, NY'."}, 'time': {'type': 'string', 'description': "The tentative time of the reservation, in 24-hour format 'HH:MM'."}, 'number_of_seats': {'type': 'integer', 'description': 'The number of seats to reserve at the restaurant.', 'enum': ['1', '2', '3', '4', '5', '6'], 'default': 2}, 'date': {'type': 'string', 'description': "The tentative date of the restaurant reservation, in the format 'YYYY-MM-DD'. If not specified, the default value represents the current date.", 'default': None}}}}, {'name': 'Restaurants_2_FindRestaurants', 'description': 'Find restaurants based on specified location, cuisine category, and other optional preferences. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['category', 'location'], 'properties': {'category': {'type': 'string', 'description': 'The cuisine type or category of food offered by the restaurant.', 'enum': ['Mexican', 'Bistro', 'Izakaya', 'Brunch', 'Thai', 'Sandwich', 'Seafood', 'Barbecue', 'European', 'Steakhouse', 'Vietnamese', 'Asian', 'Coffeehouse', 'American', 'Gastropub', 'Austrian', 'Italian', 'Indian', 'Spanish', 'Vegetarian', 'Brasserie', 'Chinese', 'Breakfast', 'Greek', 'California', 'Tapas', 'Take-out', 'Japanese']}, 'location': {'type': 'string', 'description': "The city and state where the restaurant is located, in the format of 'City, State', such as 'Berkeley, CA' or 'New York, NY'."}, 'price_range': {'type': 'string', 'description': 'The expected price range for dining at the restaurant.', 'enum': ['cheap', 'moderate', 'pricey', 'ultra high-end'], 'default': 'dontcare'}, 'has_vegetarian_options': {'type': 'boolean', 'description': 'Indicates if the restaurant offers adequate vegetarian options.', 'default': False}, 'has_seating_outdoors': {'type': 'boolean', 'description': 'Indicates if the restaurant has outdoor seating available.', 'default': False}}}}]


user: Could you set up a private transaction to Emma for $50? Transfer through app balance.

Available functions:
[{"name": "Payment_1_RequestPayment", "description": "This function initiates a payment request to a specified receiver for a certain amount. It allows setting the visibility of the transaction to private or public.", "parameters": {"type": "dict", "required": ["receiver", "amount"], "properties": {"receiver": {"type": "string", "description": "The name or identifier of the contact or account to which the payment request is sent."}, "amount": {"type": "float", "description": "The monetary value to be requested, specified in dollars."}, "private_visibility": {"type": "boolean", "description": "Indicates if the transaction should be hidden from public transaction feeds. When set to true, the transaction is private.", "default": false}}}}, {"name": "Payment_1_MakePayment", "description": "Initiate a transaction to send a specified amount of money to a friend or contact using a chosen payment method.", "parameters": {"type": "dict", "required": ["payment_method", "amount", "receiver"], "properties": {"payment_method": {"type": "string", "description": "The payment source to use for the transaction, such as a balance within the app or a linked bank card.", "enum": ["app balance", "debit card", "credit card"]}, "amount": {"type": "float", "description": "The monetary value to send, specified in the currency used by the payment platform."}, "receiver": {"type": "string", "description": "The identifier of the contact or account to receive the payment. This could be a username, phone number, or email address."}, "private_visibility": {"type": "boolean", "description": "A flag indicating whether the transaction should be hidden from public transaction feeds.", "default": false}}}}, {"name": "Restaurants_2_ReserveRestaurant", "description": "Make a table reservation at a restaurant. The function allows specifying the restaurant name, location, reservation time, number of seats, and date.", "parameters": {"type": "dict", "required": ["restaurant_name", "location", "time"], "properties": {"restaurant_name": {"type": "string", "description": "The name of the restaurant for the reservation."}, "location": {"type": "string", "description": "The location of the restaurant, in the format of 'City, State', such as 'Berkeley, CA' or 'New York, NY'."}, "time": {"type": "string", "description": "The tentative time of the reservation, in 24-hour format 'HH:MM'."}, "number_of_seats": {"type": "integer", "description": "The number of seats to reserve at the restaurant.", "enum": ["1", "2", "3", "4", "5", "6"], "default": 2}, "date": {"type": "string", "description": "The tentative date of the restaurant reservation, in the format 'YYYY-MM-DD'. If not specified, the default value represents the current date.", "default": null}}}}, {"name": "Restaurants_2_FindRestaurants", "description": "Find restaurants based on specified location, cuisine category, and other optional preferences.", "parameters": {"type": "dict", "required": ["category", "location"], "properties": {"category": {"type": "string", "description": "The cuisine type or category of food offered by the restaurant.", "enum": ["Mexican", "Bistro", "Izakaya", "Brunch", "Thai", "Sandwich", "Seafood", "Barbecue", "European", "Steakhouse", "Vietnamese", "Asian", "Coffeehouse", "American", "Gastropub", "Austrian", "Italian", "Indian", "Spanish", "Vegetarian", "Brasserie", "Chinese", "Breakfast", "Greek", "California", "Tapas", "Take-out", "Japanese"]}, "location": {"type": "string", "description": "The city and state where the restaurant is located, in the format of 'City, State', such as 'Berkeley, CA' or 'New York, NY'."}, "price_range": {"type": "string", "description": "The expected price range for dining at the restaurant.", "enum": ["cheap", "moderate", "pricey", "ultra high-end"], "default": "dontcare"}, "has_vegetarian_options": {"type": "boolean", "description": "Indicates if the restaurant offers adequate vegetarian options.", "default": false}, "has_seating_outdoors": {"type": "boolean", "description": "Indicates if the restaurant has outdoor seating available.", "default": false}}}}]

Ground-truth function call:
[{"Payment_1_MakePayment": {"payment_method": ["app balance"], "amount": [50.0], "receiver": ["Emma"], "private_visibility": [true]}}]