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: Hi. 
 agent: Hello, how may I help you? 
 customer: Please assist me in booking a flight ticket from LGA to LAX. 
 agent: Sure, I am here to help you. Please let me know your travel dates. 
 customer: My travel dates are from Nov 5th to Nov 7th. 
 agent: Thank you. May I know your name? 
 customer: I am Eric Walker. 
 agent: Would you like to travel in a connecting flight or a direct flight? 
 customer: I would like to travel in connecting flight. 
 agent: Noted. Do you have any other concerns? 
 customer: No. 
 agent: There is a flight having single connection with AA Airlines and the ticket fare is 100 only in economy class. Flight departs at 18:00 hours and arrives at 13:00 hours. Shall I book the ticket for you? 
 customer: Yes, please book. 
 agent: Your ticket is booked successfully with the flight-1005. 
 customer: Thank you. 
 agent: You are most welcome.
A:
book