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 may I lend a hand to?
customer: I need to change my existing reservation as my trip got postponed, Can you please help me with that?
agent: Sure, I am here to help you for this. Could you please mention your name?
customer: Kevin Williams here.
agent: Please wait for a while, let me check your reservation status in our records.
customer: Sure.
agent: Sorry for inconvenience, no reservation is found with your criteria.
customer: Ok, no problem. Thanks for your information.
agent: Thank you very much for contacting our agency.

A: no_reservation
****
Q: customer: Hi. I am Nancy Wilson.
agent: Hello Nancy Wilson, how may I aid you today from my end?
customer: I am planning to meet my colleague in San Francisco, could you help me in booking a flight ticket within a price limit of 200?
agent: Sure Nancy Wilson, I am glad to help you out. Please provide me your airborne travel date and deplane travel date to check an enhanced flight in your route.
customer: My journey dates are 11/29 to 12/01.
agent: Please mention me your boarding airport and grounding airport code.
customer: My source is DEN and destination is SFO.
agent: Do you have any connection limit in between your journey?
customer: I need a connecting flight.
agent: How can much you can afford for your ticket?
customer: I have mentioned above.
agent: That for confirmation I have asked you again, please allow me a moment.
customer: Sure.
agent: Here is I didn't find any flight with 200. I got a flight with 600, is it ok with it?
customer: As my budget is low, I can afford only 200. Is there any discount available for master card users?
agent: Oh, that sad to hear. At this moment we don't have any discounts because it is a festival season. Now we can't give any discount on your ticket. Sorry for inconvenience caused.
customer: It's ok, thank you for checking.
agent: Ok, thank you for reaching us.

A: no_flight
****
Q: customer: Hello.
agent: Hello, how may I serve you today?
customer: I would like to travel from BOS to JFK as a business trip, can you do the reservation?
agent: Sure, may I know your good name please?
customer: Daniel Hall here.
agent: When you are willing to travel?
customer: My trip dates are Jan 16th and Jan 18th.
agent: Is there any connection limit for you?
customer: I need break in my journey.
agent: Please share your other specifications if you have.
customer: No.
agent: Thank you for waiting and we have found a flight in an economy class with 1 connection in Hawaiian airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight?
customer: Please carry on.
agent: Your ticket has been reserved with flight number 1004.
customer: Thank you so much.
agent: Thank you for approaching us.

A:
book
****