Detailed Instructions: 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
Q: customer: hello,. 
 agent: Hello, how may I aid you today? 
 customer: I am passionate towards books, I am planning to visit The Billy Graham library at Charlotte, can you please help me in booking? 
 agent: Sure, I will help you with booking. 
 customer: Thank you. 
 agent: May I know your planned journey dates? 
 customer: My planned travel dates are 08/30 and 09/01. 
 agent: Please share me from which city you flying to? 
 customer: I am heading from Las Vegas, LAS. Charlotte airport code is CLT. 
 agent: Do you need any halt in between the journey? 
 customer: Yes, I need a halt. 
 agent: Please wait for the while. 
 customer: Sure. 
 agent: Thank you for waiting, I found a connecting flight 1024 of airline AA and fare is 100. 
 customer: Proceed with the booking. 
 agent: Your ticket has been boked. 
 customer: Thank you. 
 agent: Thank you for reaching us, have a nice journey.
A:
book