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
Input: customer: Hello. I am Kenneth Phillips. 
 agent: Hello, how can I help you today? 
 customer: I want to book a ticket for my sister she wants to participate in the fashion show in Dallas. Could you please book a ticket for her? 
 agent: Sure, could you please provide me your airport codes? 
 customer: My airport codes are from DC - DCA to TX - DFW. 
 agent: May I know your travel dates? 
 customer: I want to start on 04/03, end on 04/05. 
 agent: We found a flight with your requirement, with price 200 and single connection. Shall, I proceed with booking? 
 customer: You can proceed to booking. 
 agent: Your booking is confirmed with AA airline, flight number 1008. 
 customer: Thank you. 
 agent: Thanks for reaching us, have a good day.
Output:
book