Definition: 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
Input: customer: Hello,. 
 agent: Hello. How may I assist you today? 
 customer: I am Carol Brown. I need to book a flight ticket from JFK to ATL, can you please help me to book a flight ticket? 
 agent: Sure, I am here to assist you about this but I need some information from you, like when you are going to travel for this trip. 
 customer: My journey dates are Jan 25 and Jan 27. 
 agent: Please wait for a minute, let me check. 
 customer: Sure. 
 agent: I found a direct flight with price 100, shall I proceed? 
 customer: Yes, please proceed. 
 agent: Your ticket has been booked with flight-1011. 
 customer: May I know the airline name please? 
 agent: Frontier airline is providing flight for you. 
 customer: Thank you for your service. 
 agent: My pleasure.
Output:
book