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. I am Dorothy Jones. 
 agent: Hello, how shall I aid you? 
 customer: I need to book a flight ticket from WA-SEA to PA-PHL. 
 agent: May I know your travelling dates please? 
 customer: Sure, My travelling dates are from 11/25 to 11/27. 
 agent: Ok, I will check the flight availability and revert you in a moment. 
 customer: Sure. 
 agent: We found an airline Jet Blue with airline number 1010. Price is 100 with two connections. 
 customer: You can proceed for booking a flight ticket. 
 agent: Ok, your reservation has been processed. 
 customer: Thanks for your information. 
 agent: Thank you for contacting us, have a safe journey.
A:
book