Instructions: 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 can I aid you? 
 customer: I am Deborah Thompson. I need to book a flight ticket from AUS to SEA, Can you please help me for booking? 
 agent: Sure, can you please provide me your travelling dates? 
 customer: I would like to travel on 12/04 to 12/06. 
 agent: Do you need any stop overs in between your journey? 
 customer: I need a connecting flight in between my journey. 
 agent: Please wait for a moment. 
 customer: Sure. 
 agent: There is a connecting flight with price 400, flight number is 1028. 
 customer: Ok, proceed for booking. 
 agent: Your ticket has been confirmed with JetBlue airlines. 
 customer: Thanks for your information. 
 agent: Have a nice day.
Output:
book