In this task, you are given a conversation between a flight agent and the customer. You are given 4 options and you need to select the goal of the conversation. It is provided as part of customer's context, which has to be one of the following: `book`: Make a new reservation, `cancel`: Cancel an existing reservation, `no_flight`: No flight found for the customer's preference, `no_reservation`: No reservation / No change / No cancellation was made in the conversation, mostly enquiring details

customer: Hello. 
 agent: Hello. 
 customer: I am Karen Edwards. 
 agent: How may I help you today? 
 customer: Can you please help me in cancelling my reservation as my meeting got cancelled? 
 agent: Sure, we are here to help you. 
 customer: Thank you. 
 agent: Please wait a minute. 
 customer: Ok. 
 agent: We found a reservation on your name and it got cancelled successfully. 
 customer: Thank you. 
 agent: Thank you for opting us.
cancel