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
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Question: customer: Hi.
agent: Hello, how can I help you today?
customer: I have to do some modification in my previous flight ticket booking that there is a sudden event held at my home town, so I am unable to travel the trip. can you please help me out with changing of my reservation?
agent: Sure, I am here to help you with that, can I know your good name to proceed further?
customer: Ronald Nelson here.
agent: Thank you. Please be online for a while. I will check your reservation status and get back to you.
customer: Ok.
agent: I am sorry to say you that there is no reservation found under your name in our database.
customer: That's ok, thank you for your help.
agent: Thank you for reaching us.

Answer: no_reservation

Question: customer: Hello.
agent: Hello, what can I do for you today?
customer: Can you please help me in flight ticket booking process from OAK to SFO?
agent: Sure, please forward your trip dates.
customer: Thank you for your response, I want to take off on Aug 27 and book my return ticket also on Aug 29.
agent: Is there any class preference?
customer: No.
agent: Any other requirement to be met?
customer: I will prefer direct flight.
agent: Can you please share your name to proceed further?
customer: Sure, my name is Steven Davis.
agent: Sorry, no flights found as per your requirements.
customer: Oh! It's ok, no problem. Thank you for your information.
agent: Thank you for contacting us.

Answer: no_flight

Question: customer: Hi, Andrew King here.
agent: Hello. How can I aid you today?
customer: I want to travel with my friends, can you please help me to book a ticket from DCA to DFW?
agent: Sure, I will help you Andrew King. Will you please inform your travel dates for booking flight ticket?
customer: Sure, my dates of planning is from 04/14 to 04/16.
agent: Ok, please wait a moment, I will check flight availability.
customer: Sure, please make sure that connection is 1.
agent: Sure. There is a flight ticket available as per your requested details, airline is Spirit and flight number is 1018.
customer: Please proceed with this booking.
agent: Ok. Your flight ticket is booked successfully.
customer: Thank you for your help in booking a ticket.
agent: Thank you for reaching us, have a good day Andrew King.

Answer:
book