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 can I help you today? 
 customer: I am planning to participate storytelling festivals at Seattle. Can you do the reservation? 
 agent: Sure, kindly mention your travel dates. 
 customer: Trip dates are 08/20 and 08/22. 
 agent: Can you please provide me your airport codes? 
 customer: My airport codes are CLT-SEA. 
 agent: There is a flight with your requirement, airline is Hawaiian with price 100 and single connection. Shall I proceed with booking? 
 customer: Please carry on. 
 agent: Your booking is done. 
 customer: Thank you so much. 
 agent: May I know your name? 
 customer: Anna Robinson here. 
 agent: Thanks for reaching us, have a good day.
A:
book