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: Hi. 
 agent: Hello. 
 customer: Laura Turner here. 
 agent: How may I aid you? 
 customer: Can you book a flight ticket for my airport codes that is from IAH to IAD? 
 agent: Ok, please mention your dates of travel. 
 customer: The travel dates are from Jan 03 to Jan 05. 
 agent: Do you have any other requirements? 
 customer: I would like to prefer a flight with a stopover option. 
 agent: There is a connecting flight-1009 in economy class, is it fine for you? 
 customer: You can book the flight ticket. 
 agent: Ok, booking is done on Delta airlines. 
 customer: Thank you. 
 agent: Welcome.
[A]: book


[Q]: customer: Hello, myself Samuel Harris. 
 agent: Hello. How can I help you? 
 customer: Can you please help me to book a direct flight from BOS to JFK? 
 agent: May I know your travelling dates please? 
 customer: My travel dates are from 10/10 to 10/12. 
 agent: There is no direct flight available from BOS to JFK. 
 customer: No problem, thank you for checking. 
 agent: Welcome.
[A]: no_flight


[Q]: customer: Hello. 
 agent: Hello. How may I help you? 
 customer: Katherine Perez here. Owing an emergency, I want to cancel my recent reservation. Can you please help me? 
 agent: Sure, I will help you in cancelling your ticket. Ok, please wait a moment. 
 customer: Ok, take your time. 
 agent: Thank you for waiting. 
 customer: My pleasure. 
 agent: Sorry, there are no reservations found on this name. Thank you for choosing our services. 
 customer: Thank you for your information.
[A]:
no_reservation