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

Input: Consider Input: customer: Hi.
agent: Hello, how can I guide you for today?
customer: I need to book a ticket from Denver to New York.
agent: Can you please share on what dates you are willing to travel?
customer: Travelling dates are from Feb, 9 to Feb, 11.
agent: Can you please provide your source and destination airport codes?
customer: Airport codes DEN and LGA.
agent: Are you looking for a connecting flight or direct flight?
customer: I prefer connecting flight.
agent: Do you have any class preferences?
customer: I would like to prefer business class.
agent: Do you have any other requirements that you are looking for?
customer: I would like to depart in the afternoon.
agent: Can you please provide your name to proceed further?
customer: My name is Kathleen Collins.
agent: There is a connecting flight with ticket fare 300 in JetBlue airlines in business class. Is it ok for you?
customer: Please book a flight.
agent: Your booking is confirmed with flight number 1014. Departure time is 15:00 hours and arrival time is 17:00 hours.
customer: Thank you.
agent: Thank you for contacting us, have a nice day.

Output: book

Input: Consider Input: customer: Hi.
agent: Hello, how can I help you?
customer: Can you please help me in booking a flight ticket to SEA from BOS?
agent: May I know your desired travel dates please?
customer: My travel dates are from Mar 03 to Mar 05.
agent: Do you have any specifications?
customer: I need a connecting flight.
agent: May I know your name please?
customer: I am Stephen Carter.
agent: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?
customer: You can proceed.
agent: Your ticket is booked, flight number 1011 with Spirit Airlines.
customer: Thank you.
agent: Thank you for opting us.

Output: book

Input: Consider Input: customer: Hi, I am Sandra Hill from Chicago.
agent: Hello, Sandra Hill, How can I support you the best today?
customer: I have scheduled my trip dates to reach Denver on 10/03 to 10/05, so please aid me in booking a flight.
agent: Sure, I can aid you in booking.
customer: Ok.
agent: From which city you want to board and land on?
customer: I want to board from IL - ORD and land at CO - DEN.
agent: Ok, please be on hold.
customer: Sure.
agent: We found a direct flight for your journey. Are you comfortable with that?
customer: No, I need a connecting flight.
agent: Ok, I will not proceed.
customer: Thank you for your information.
agent: Thanks for your presence.
Output: no_reservation