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

[EX Q]: customer: Hello. 
 agent: Hello. How can I help you? 
 customer: I want to book a flight ticket from LAX to SEA. Can you please help me in that? 
 agent: Sure, I will help you in booking. Can you please share your trip dates? 
 customer: My trip dates are Dec 19 to Dec 21. 
 agent: Do you have any connection limit preference? 
 customer: I need a connecting flight. 
 agent: Sorry, there are no flights found for the given dates. 
 customer: Ok, no problem. Thank you. 
 agent: May I know your name for documentation purpose? 
 customer: Myself Jennifer Harris. 
 agent: Thank you for choosing us.
[EX A]: no_flight

[EX Q]: customer: Hello. 
 agent: Hello. How can I aid you? 
 customer: I am planning to change an exiting reservation, due to health issue.Can you please change my reservation? 
 agent: Sure. May I know your name? 
 customer: My name is Patricia Brown. 
 agent: Please wait a while. 
 customer: Sure. 
 agent: Thanks for being waiting, We didn't found any reservation by this name. 
 customer: That's fine, thank you for your help. 
 agent: Thank you for opting us.
[EX A]: no_reservation

[EX Q]: customer: Hello. 
 agent: Hello, how can I assist you? 
 customer: Due to inconvenience of my work, I want to change my reservation. Can you please help me for that? 
 agent: Sure, may I know your name to check your reservation from our data base? 
 customer: My name is Larry Jackson. 
 agent: We regret to inform you that there is no active reservation found on your name to change. 
 customer: Anyway, thanks for the information. 
 agent: Thank you for opting us.
[EX A]:
no_reservation