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. How can I help you? 
 customer: I made a reservation earlier to visit Phoenix in direct flight but now I want to travel in connecting flight. can you help me in changing my reservation? 
 agent: Sure, I will help you. 
 customer: Thank you. 
 agent: May I know your name? 
 customer: I am Sandra Carter. 
 agent: Please, wait for a moment. 
 customer: Ok. 
 agent: Thank you for waiting, there is no reservation found on your name to proceed for modification. 
 customer: No issue. Thank you. 
 agent: Thank you for approaching us.
[A]: no_reservation


[Q]: customer: Hello. 
 agent: Hello. How may I assist you? 
 customer: I am Andrew Thompson. Can you please book a flight ticket from LGA to LAX? 
 agent: Ok, please provide your journey dates too. 
 customer: Sure, I need to travel on dates of 12/06 and 12/08. 
 agent: Please wait a moment, I will revert you back with the proper information. 
 customer: Sure, take your time. 
 agent: There is a connecting flight-1012 on UA airlines, would you like me to proceed? 
 customer: That is fine, please proceed with booking. 
 agent: Your ticket has been done with your criteria. 
 customer: Thank you for your help. 
 agent: Thanks for choosing us.
[A]: book


[Q]: customer: Hello. 
 agent: Hello. How may I help you? 
 customer: Can you please help me to change my reservation? 
 agent: Sure, may I know your name? 
 customer: My name is Kimberly Scott. 
 agent: Can I know your new airport codes? 
 customer: Sure, my source point is EWR and destination point is AUS. 
 agent: Sure, could you please provide your travelling dates to search for the flight? 
 customer: My travelling dates are on May 11 and May 13. 
 agent: Do you have any requirements? 
 customer: I need a direct flight. 
 agent: Sorry to say, no flight is available for you. 
 customer: Ok, not a problem. 
 agent: Thank you for reaching us. 
 customer: Thank you.
[A]:
no_flight