Detailed 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
Q: customer: Hi. 
 agent: Hello. How may I help you out? 
 customer: I am Jerry Wilson, want to travel from JFK to HOU. Please help me in booking my ticket. 
 agent: Sure, I will help you out in booking the ticket. May I know your travelling dates please? 
 customer: Sure, my travelling dates are from 12/08 to 12/10. 
 agent: There is a flight with connection 1 and price 200, can I proceed? 
 customer: Please proceed with the booking. 
 agent: Ok, your ticket has been booked with flight number 1000. 
 customer: Thank you for your help. 
 agent: Thank you for choosing us.
A:
book