Teacher: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
Teacher: Now, understand the problem? Solve this instance: customer: Hello. 
 agent: Hello, how may I aid you today? 
 customer: Can you please help me to reserve a flight ticket from JFK to LAS? 
 agent: Sure, I am here to help you out. Please provide me your trip dates. 
 customer: Thank you. My preferable travel dates are Feb 17th and Feb 19th. 
 agent: May I know your name to proceed further? 
 customer: My name is Deborah Mitchell. 
 agent: Here is a connecting flight in economy class. Can I proceed with it? 
 customer: That is exactly matching to my requirement, please proceed with the ticket booking. 
 agent: Your ticket has been booked with 1005 flight in United American airlines. 
 customer: Thank you for your help. 
 agent: Thank you for reaching us Deborah Mitchell.
Student:
book