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 am Elizabeth Gonzalez. I am looking for a direct flight from IAH to DTW, please book my flight ticket. 
 agent: May I know your desired travel dates please? 
 customer: Sure, I want to depart on Dec 4th and I have to return back in the afternoon on Dec 6th. 
 agent: Please wait a while. 
 customer: Sure. 
 agent: There is a flight with connection limit 1 and fare 200, shall I proceed for booking? 
 customer: No, I prefer for a direct flight. 
 agent: Sorry to say, there is no flight available on your desired travel dates. 
 customer: Sad to hear that, thank you for checking. 
 agent: Thank you for opting us.
[A]: no_flight


[Q]: customer: Hello. 
 agent: Hello. 
 customer: I am Steven Roberts. 
 agent: How may I help you? 
 customer: Can you please help me in booking a flight ticket from DCA to IAD? 
 agent: Sure, I will help you in booking the ticket. May I know your travelling dates please? 
 customer: My travelling dates are Jan 18th and Jan 20th. 
 agent: Do you have any other specifications? 
 customer: The depart time should be morning. 
 agent: Sorry for this inconvenience, I could not find any flight with your requirements. 
 customer: Ok, not an issue. Thank you. 
 agent: Thank you for reaching us.
[A]: no_flight


[Q]: customer: Hello. 
 agent: Hello. May I know your name? 
 customer: Sure, I am Sandra Allen. 
 agent: How can I assist you today? 
 customer: Today, can you help me in booking a ticket to Atlanta? 
 agent: Sure, we are delighted to help you. When you are willing to travel to Atlanta? 
 customer: I am planning to meet my children and wife in Atlanta, as we planned to visit Georgia Aquarium on 03/21. 
 agent: Ok. May I know your recur date? 
 customer: We planned the trip for couple of dates, so I would like to go on 03/20 and I intend to return back on 03/22. 
 agent: Kindly share your airport codes? Do you want any lay bay in your journey? 
 customer: Sure, I will depart from New York, LGA and landing at Atlanta ATL. 
 agent: Ok. 
 customer: Yes, I am comfortable to travel if there is one stopover in between my journey. 
 agent: Please be online, I will check the availability and revert to you. 
 customer: Sure. 
 agent: Thanks for waiting,. 
 customer: Ok. 
 agent: Hawaiian airlines are providing service on your route with 1 connection. Can I proceed? 
 customer: Ok, please proceed for booking. 
 agent: Your booking is done with flight 1027. 
 customer: Thank you. 
 agent: Thank you for reaching us. 
 customer: Welcome.
[A]:
book