Q: 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, how may I assist you today? 
 customer: Could you please help me to book a business class ticket from Los Angeles to attend a business meeting in New York? 
 agent: Sure, may I know your travel dates? 
 customer: I need to depart on Apr 2nd and my return date will be on Apr 4th. 
 agent: Where would you like land in New York? 
 customer: My boarding point is LAX and my destination point is JFK. 
 agent: Please share me your name. 
 customer: I am Jessica Crown. 
 agent: Do you have any specifications? 
 customer: I need a break in between my journey. 
 agent: We found a economy class flight on your details with Southwest Airline, flight number: 1002. Shall I book this ticket? 
 customer: That's fine, you can book the ticket. 
 agent: Your ticket has been reserved. 
 customer: Thank you for your assistance in booking. 
 agent: Thank you so much for choosing us.
A:
book