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

Example 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.
Example Output: book

Example Input: customer: Hello.
agent: Hello, how can I assist you today?
customer: I want to attend a Seminar in Washington. Can you please help me for booking the flight ticket?
agent: Sure, Can you please provide your take off and landing airport codes?
customer: My airport codes are LAS and IAD.
agent: On which dates would you like me to book a flight ticket for you?
customer: My travelling dates are June 17 and June 19.
agent: On what name, do I need to reserve your ticket?
customer: Ashley Walker.
agent: Let me know your connection limit?
customer: I prefer single connecting flight.
agent: Do you have any other requirements?
customer: No.
agent: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.
customer: Anyway, thanks for the information.
agent: Thank you for choosing us.
Example Output: no_flight

Example Input: customer: Hello.
agent: Hello. How may I serve you now?
customer: I am Amanda Walker, I want to cancel my ticket has my plan to visit New York for reunion which is being cancelled. Can you can my reservation?
agent: Sure, I will help you. Please wait a while.
customer: Sure.
agent: Thank you for your time. We found a reservation in your name and it has been cancelled.
customer: Ok, thank you for helping me.
agent: Thank you for contacting us.
Example Output:
cancel