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

[Q]: customer: Hello. 
 agent: Hello. How can I assist you at this moment? 
 customer: I am Pamela Walker here. I am planning to visit a Houston city to meet my grandfather in IAH from LAS. Can you find a flight ticket for me? 
 agent: Sure Pamela Walker, I will help you with that. Can I have your travel dates please? 
 customer: Ok, my preferable dates are on 12/19 and back on 12/21. 
 agent: Ok Pamela Walker, please wait a moment to check flight availability. 
 customer: Sure. 
 agent: AA airlines running a flight in your route with connection 1 and the fare of the ticket is 200. Shall I proceed with booking? 
 customer: Yes, you can reserve the ticket. 
 agent: Ok Pamela Walker, your ticket booking has done and the flight number is 1021. 
 customer: Thank you for spending your time. 
 agent: Thank you for choosing us, have a great journey.
[A]: book


[Q]: customer: Hello, I am Angela Phillips. 
 agent: Hello, how can I help you? 
 customer: Due to an emergency meeting, I want to cancel my reservation. Can you help me with it? 
 agent: Ok, please wait I will revert you in a moment. 
 customer: Sure. 
 agent:  Sorry to inform you that no reservation was found on your name. 
 customer: No problem, thank you for the information. 
 agent:  Thank you for availing us.
[A]: no_reservation


[Q]: customer: Hello. 
 agent: Hello, how may I aid you? 
 customer: I am planning to attend my friend wedding at OAK, can you please reserve flight ticket from CLT? 
 agent: Ok, may I know your desired travelling dates? 
 customer: My desired travelling dates are Nov,09 and Nov,11. 
 agent: Do you need a direct flight? 
 customer: No, I prefer one connecting flight. 
 agent: May I know your name please? 
 customer: Myself Dennis Walker. 
 agent: Do you have any other requirements? 
 customer: I prefer economy class flight ticket. 
 agent: Flight-1007 is available with economy class and 1 connection by Frontier Airlines. Can I book it now? 
 customer: Yes, please proceed the reservation. 
 agent: Your ticket is reserved, enjoy your friend's wedding. 
 customer: Thank you very much for reserving my flight ticket. 
 agent: Have a nice day.
[A]:
book