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: Hello.
agent: Hello, how may I serve you today?
customer: I planned to meet my friend in DFW, can you please help me to book a flight ticket from OAK?
agent: Sure, can I know your good name please?
customer: I am Eric Williams.
agent: When you are willing to travel?
customer: I prefer to travel on Apr 27 and Apr 29.
agent: Would you let us know if you have any other preferences?
customer: I prefer to travel in a connecting flight.
agent: We found a connecting flight 1005 in JetBlue airlines at the cost of 200 with economy class. Can I proceed for booking?
customer: Ok, please confirm my booking.
agent: Your booking is done.
customer: Thank you for your help.
agent: Thank you for choosing us.

Output: book

Input: Consider Input: customer: Hello.
agent: Hello. How can I aid you today?
customer: I need to book a connecting flight with the normal-cost airlines. Can you help me with that?
agent: Sure, I am here to help you with that flight ticket booking. May I know your travelling dates?
customer: Thank you for considering my request. My travelling dates are June 27 and June 29.
agent: May I know your name please?
customer: My name is Deborah Adams.
agent: Is there any airline preference?
customer: I have mentioned you already.
agent: May I know your preferable airport codes, please?
customer: Sure, my airport codes are HOU and PHL.
agent: Do you have any other specifications?
customer: No.
agent: Please wait for a whils.
customer: Sure.
agent: There are no flights on this route as per your details.
customer: Not a problem, anyways thank you for the information.
agent: Thank you for reaching us, have a great day.

Output: no_flight

Input: Consider Input: customer: Hello, I am Anthony White.
agent: Hello, what can I do for you?
customer: I would like to book a flight ticket to Atlanta, GA-ATL to meet my grand parents on 05/10. Can you help me with this?
agent: Sure, may I know your source airport code?
customer: My boarding point is Las Vegas, NV-LAS.
agent: When did you plan to return?
customer: I intend to return on 05/12. The connection limit should be one.
agent: Sure. Please wait a moment.
customer: Ok.
agent: There is a Frontier airline with flight number 1029 and price is 100 available with your requirements.
customer: Ok, you can book the ticket.
agent: Your reservation is done.
customer: Thanks for your assistance.
agent: Thank you for opting us.
Output: book