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, how may I aid you? 
 customer: I want to book a flight ticket to attend a Seminar at Philadelphia, can you help me with booking? 
 agent: Sure, I can help you. May I know your genesis airport code? 
 customer: My takeoff airport code is JFK. 
 agent: Please share your itinerary dates. 
 customer: I will fly on Nov 12 and return on Nov 14. 
 agent: Which class do you prefer? 
 customer: No. 
 agent: Do you prefer a direct flight? 
 customer: No, I need a connecting flight. 
 agent: May I know your name? 
 customer: I am Samuel Wilson. 
 agent: Please wait for a while. 
 customer: Sure. 
 agent: Spirit airlines with flight 1000 is providing a connecting flight and ticket costs you 100 in economy class. 
 customer: Please proceed. 
 agent: Your ticket is booked Samuel Wilson. 
 customer: Thank you. 
 agent: Thank you for reaching us.
A:
book