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. 
 customer: Laura Turner here. 
 agent: How may I aid you? 
 customer: Can you book a flight ticket for my airport codes that is from IAH to IAD? 
 agent: Ok, please mention your dates of travel. 
 customer: The travel dates are from Jan 03 to Jan 05. 
 agent: Do you have any other requirements? 
 customer: I would like to prefer a flight with a stopover option. 
 agent: There is a connecting flight-1009 in economy class, is it fine for you? 
 customer: You can book the flight ticket. 
 agent: Ok, booking is done on Delta airlines. 
 customer: Thank you. 
 agent: Welcome.

A: book
****
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.

A: no_reservation
****
Q: customer: Hello. 
 agent: Hello. 
 customer: Myself Gregory Allen. 
 agent: My job is to assist you. May I know your concern please? 
 customer: Can you please book a flight ticket from EWR to LAS locations? 
 agent: Please let me know your travel dates to book? 
 customer: My travelling dates are from 04/20 and 04/22. 
 agent: There is a connecting flight with price 100. Can I book it now? 
 customer: Please proceed with it. 
 agent: Ok, there flight ticket is been booked and the flight number 1013. 
 customer: Thank you so much.

A:
book
****