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: Hi. 
 agent: Hello. How may I help you? 
 customer: I am Rachel Young. I am looking for a flight from IAH to ATL, can you reserve me a flight ticket for me? 
 agent: Sure, please provide your trip dates? 
 customer: My trip dates are from 05/13 till 05/15. 
 agent: Thanks for waiting, we found a flight with your provided information in Hawaiian airline with 1 connection and the fare is 100. Shall I confirm your ticket with this airline? 
 customer: Please proceed with it. 
 agent: Your ticket is booked. 
 customer: Thank you for reaching us. 
 agent: Most welcome.
Output:
book