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: Hello. I am Elizabeth Davis. 
 agent: Hello. How may I aid you today? 
 customer: I want to book a ticket as I have meeting purposes, can you please book me a ticket from JFK? 
 agent: Sure, we are here to serve you. 
 customer: Thank you. 
 agent: Please let me know your planned travelling dates to proceed further. 
 customer: Sure, my travel dates are on 03/06 and 03/08. 
 agent: Can I know your connection limit? 
 customer: I need a connecting limit. 
 agent: Kindly share your destination point. 
 customer: I would like to landing at IAD. 
 agent: Thank you for providing your details, please wait for a while. 
 customer: Ok, I will wait. 
 agent: We have found a connected flight with Southwest airlines, flight number 1001 and the fare of 100. 
 customer: Ok, please book this ticket. 
 agent: Your booking has been processed successfully. 
 customer: Thank you so much. 
 agent: Thanks for opting us.
A:
book