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. I am Ronald Hall. 
 agent: Hello, how can I help you today? 
 customer: I am planning to travel from LAX to DEN, help me in booking a flight for me? 
 agent: Sure, may I know your planned travel dates? 
 customer: I like to travel on 06/08 to 06/10. 
 agent: Do you need a halt in between your journey? 
 customer: Yes, I need 1 connection. 
 agent: Please wait for a moment. 
 customer: Ok. 
 agent: We found an airline: Delta, flight number: 1004 and price is 100 with one connection. 
 customer: Proceed for booking. 
 agent: Your flight ticket has been reserved. 
 customer: Thank you. 
 agent: Thank you for reaching us.
A:
book