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. 
 customer: I am Stephanie Campbell. 
 agent: How may I guide you today? 
 customer: My business meeting has been cancelled, could you please help me with cancelling my recent reservation? 
 agent: Sure, I will help you with that. Please wait for a minute. 
 customer: Sure, take your time. 
 agent: I am sorry to say that there is no reservation found. 
 customer: That's ok, not an issue. Anyways, thank you for the information. 
 agent: Thank you for reaching us.
[EX A]: no_reservation

[EX Q]: customer: Hi. 
 agent: Hello, how may I aid you today? 
 customer: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that? 
 agent: Sure, may I know your good name? 
 customer: I am Kevin Clark. 
 agent: Ok, please wait for a minute. 
 customer: Sure. 
 agent: I have checked in reservation list to change your ticket, but could not find any reservation with your name. 
 customer: Ok, no issues. Thanks for the information. 
 agent: Thank you for reaching us.
[EX A]: no_reservation

[EX Q]: customer: Hi. 
 agent: Hello. How may I help you out? 
 customer: I need to book a flight ticket from OAK to ORD, can you help me in booking a flight ticket? 
 agent: Sure, I will help you in booking the ticket. May I know your travelling dates please? 
 customer: Sure, my journey dates are Jun 17 and Jun 19. 
 agent: Can I know your name please? 
 customer: Sure, Rebecca Moore here. 
 agent: Do you need any specifications? 
 customer: No. 
 agent: There is a flight with connection 1 and price 100, can I proceed? 
 customer: Yes, you can. 
 agent: Ok, your ticket has been booked with flight number 1024. 
 customer: Thank you for your assistance. 
 agent: Thank you for reaching us.
[EX A]:
book