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 may I serve you today? 
 customer: I would like to travel from BOS to JFK as a business trip, can you do the reservation? 
 agent: Sure, may I know your good name please? 
 customer: Daniel Hall here. 
 agent: When you are willing to travel? 
 customer: My trip dates are Jan 16th and Jan 18th. 
 agent: Is there any connection limit for you? 
 customer: I need break in my journey. 
 agent: Please share your other specifications if you have. 
 customer: No. 
 agent: Thank you for waiting and we have found a flight in an economy class with 1 connection in Hawaiian airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight? 
 customer: Please carry on. 
 agent: Your ticket has been reserved with flight number 1004. 
 customer: Thank you so much. 
 agent: Thank you for approaching us.
Output:
book