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 assist you? 
 customer: I want to travel from OAK to PHL. Can you help me to book a flight ticket? 
 agent: Sure, I am here to help you out. May I know your travel dates please? 
 customer: I want to travel in the flight on Oct 01 and Oct 03. 
 agent: Can you please share your name? 
 customer: Christine Thompson. 
 agent: Do you have any other specifications? 
 customer: I want to have a connection of 1. 
 agent: Hawaiian airline sis providing connecting flight for you with the fare f 200 in economy class, shall I proceed with the booking? 
 customer: Proceed to booking. 
 agent: Your ticket is booked with the flight-1022. 
 customer: Thank you for your help. 
 agent: Thank you for choosing us.
A:
book