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, what can I aid you at this moment? 
 customer: I am Donald Baker from Denver. I want to go to New York next week, can you please book a flight ticket for me on 04/29? 
 agent: I am glad to help you about your flight ticket booking Baker. Can you please provide your respective location codes of journey? 
 customer: Thank you, I want to take off from DEN and destination airport is LGA. 
 agent: Would you like to have a return journey? If so please provide your return date. 
 customer: Yes, please book my return ticket also on 05/01. 
 agent: Hold on for sometime. 
 customer: Ok. 
 agent: There is a flight with single stopover having a ticket fare of 300 which is provided by AA airlines. Would you like to book this flight ticket? 
 customer: Please proceed. 
 agent: I have booked your flight ticket with flight 1006 in an economy class. 
 customer: Thank you for your help. 
 agent: Most welcome, thank you for employing our service. Have a safe journey.
A:
book