Function: cancel_booking
This tool belongs to the travel system, which allows users to book flights, manage credit cards, and view budget information. Tool description: Cancel a booking
Parameters: access_token: type: string
description: The access token obtained from the authenticate
booking_id: type: string
description: The ID of the booking
Required parameters: access_token, booking_id
Response: cancel_status: type: boolean
description: The status of the cancellation, True if successful, False if failed