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 help you today? 
 customer: Can you please cancel my existing reservation as my plan to go for holiday trip got cancelled? 
 agent: Sure, can I know your name? 
 customer: I am Rachel Jones. 
 agent: Ok, please wait. 
 customer: Sure. 
 agent: Thanks for waiting. 
 customer: Ok. 
 agent: We found reservation on your name and it has been cancelled successfully. 
 customer: Thank you. 
 agent: Thank you for opting us.
[A]: cancel


[Q]: customer: Hello. 
 agent: Hello. How may I assist you? 
 customer: I have to attend for a client meeting in ATL. Can you please make a reservation from IAD? 
 agent: Sure, I will help you. May I know your trip dates please? 
 customer: Sure, my travelling dates are May 14 - May 16. 
 agent: Can I have your good name please? 
 customer: My name is Sharon Allen. 
 agent: Do you need a connecting flight for your trip? 
 customer: I need a connecting flight. 
 agent: May I know your timings of your journey? 
 customer: My depart time must be in the afternoon. 
 agent: Do you have any other specifications? 
 customer: No. 
 agent: Sharon Allen, no flights has been found on your specifications. 
 customer: Ok, no problem. Thank you for the information. 
 agent: Thank you for approaching us.
[A]: no_flight


[Q]: customer: Hi. 
 agent: Hello. 
 customer: I am Sarah Wright. 
 agent:  Sarah Wright. How may I help you? 
 customer: I would like to book a flight ticket from PHX to attend a robotic workshop at LGA, can you help me to book an economy class ticket? 
 agent: Sure, can you provide me the travel dates? 
 customer: My travelling dates are 11/08 and 11/10. 
 agent: Give me a moment. 
 customer: Ok. 
 agent: Do you have any preferences? 
 customer: I need a connecting flight. 
 agent: I regret to inform that, there are no flights on your desired dates. 
 customer: That's ok, thank you for the response. 
 agent: Thank you for approaching us.
[A]:
no_flight