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. 
 agent: Hello, what help do you need from my side? 
 customer: I am Nancy Williams. I am planning to visit my brother's heme, because of a family function. Can you help me out? 
 agent: Sure, I can help you, can I have your airport codes? 
 customer: My airport codes are BOS to MSP. 
 agent: Can you help me in providing your planning dates Nancy? 
 customer: These are my travelling dates 11/23 to 11/25. 
 agent: Thanks for your information, as per your request there is a flight with a fare of 200 in AA airlines. Can I proceed for booking? 
 customer: Yes, you can proceed. 
 agent: Nancy, your ticket is confirmed to your landing location. Have a happy journey. 
 customer: Thank you for your help. 
 agent: You are welcome.
Output:
book