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

[EX Q]: customer: Hello. 
 agent: Hello. 
 customer: I am Ashley smith. 
 agent: How can I help you from flight booking agency? 
 customer: I am planning to go for bussiness trip to Minneapolis. Can you please book me a flight ticket? 
 agent: Sure, can you please share your travelling airport codes? 
 customer: My travelling departure and arrival airport codes from SEA to MSP. 
 agent: May I know your preferable journey dates to proceed further? 
 customer: My travellling dates are 03/19 and 03/21. 
 agent: Wait a moment please, let me check the flights availability on this route. 
 customer: Ok. 
 agent: AA airlines is providing the service on this route with 1 connection limit, shall I book your ticket? 
 customer: Sure, you can book the ticket for this flight. 
 agent: Ashley smith, your ticket is confirmed successfully with flight number 1018. 
 customer: Thank you for your valuable services. 
 agent: Thank you for choosing our services, have a safe journey. 
 customer: Most welcome.
[EX A]: book

[EX Q]: customer: Hello, I am James Brown. 
 agent: Hello, how can I help you today? 
 customer: My son is giving a performance in an International competition at CO - DEN. Can you help me out with booking from NV - LAS. 
 agent: Sure, please help me with your travelling dates? 
 customer: I will leave on 04/04 and return on 04/06. 
 agent: Ok, any connection limit? 
 customer: Yes, I need a halt. 
 agent: Ok, please hold on a moment. 
 customer: Ok. 
 agent: Thanks for waiting, no flights found with your requested details. 
 customer: It's Ok. 
 agent: Thank you for choosing us. 
 customer: Thanks for the information.
[EX A]: no_flight

[EX Q]: customer: Hello,. This is Janet Clark, from Las Vegas. 
 agent: Hello, how may I provide service to you? 
 customer: I am planning to visit NASCAR hall of fame museum at Charlotte, can you please help me in reserving a flight ticket? 
 agent: Sure, we are perky to help you. 
 customer: Thank you. 
 agent: Can you please let me know your airport codes? 
 customer:  I need to leave from my nearest airport LAS to reach CLT. 
 agent: When you are planning to make your journey? 
 customer: I want to travel on 05/08, and need to catch return flight on 05/10. 
 agent: Do you prefer any flag stop in between journey? 
 customer: Yes, I need a flag stop. 
 agent: Ok, please be on hold. 
 customer: Sure. 
 agent: Sorry to inform you that, there are no flights are available on your requested dates. 
 customer: Ok, no issues. Thanks for the information. 
 agent: Thank you for choosing  us, have a nice day.
[EX A]:
no_flight