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, I am Kathleen Garcia. 
 agent: Hello Garcia, how may I aid you today? 
 customer: Could you please help me in finding a less expensive flight within price 200? 
 agent: Sure Kathleen Garcia, I am happy to help you with that. 
 customer: Thank you. 
 agent: Yes, there are many flights available to you with in your budget. Can you please let me know airport codes of your journey locations? 
 customer: Sure, my origin is DTW and final destination is CLT. 
 agent: If you have planned any particular travel dates, please let me know them. It will help me to get exact flight for you. 
 customer: I have planned to start on 04/27 and return on 04/29. 
 agent: Do you have limits regarding connections? 
 customer: Yes, I need a halt within my route to CLT. 
 agent: Available flight is providing economy class ticket, is it ok for you? 
 customer: Yes, that's absolutely fine with me. Please proceed. 
 agent: Ok Kathleen Garcia, your ticket booking has done in AA airlines and the flight number is 1016. 
 customer: Thanks for your service. 
 agent: Thank you for choosing us, have a great journey.
book