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

Ex Input:
customer: Hi.
agent: Hello, how may I aid you today?
customer: I need to cancel my ticket, can you help me?
agent: Sure, may I know your name?
customer: I am David Parker.
agent: Please wait for couple of minutes.
customer: Sure.
agent: We found a reservation on your name, shall I proceed to cancel?
customer: Yes, cancel it.
agent: Your reservation has been cancelled.
customer: Thank you for your help.
agent: Thank you for reaching us.

Ex Output:
cancel

Ex Input:
customer: Hi.
agent: Hello. How may I guide you at this moment?
customer: I need to book a flight ticket from PHL to MCO, can you please help me for booking?
agent: Sure, may I know your travelling dates please?
customer: I would like to travel on 12/10 to return on 12/12.
agent: Ok, do you need any stopover in between the journey?
customer: I need a connecting flight.
agent: Do you prefer business or economy class?
customer: I need a business class.
agent: Can I have your good name please?
customer: Brenda Campbell here.
agent: There are no flights found on your requested dates.
customer: Ok, no problem.
agent: Thank you for reaching us.
customer: Thanks for your information.

Ex Output:
no_flight

Ex Input:
customer: Hi.
agent: Hello, how can I aid you today?
customer: I am Nicole Gonzalez. Would it be possible to cancel my reservation, which I have done with my name?
agent: Sure, please wait a moment.
customer: Ok, take your time.
agent: Sorry to inform, no reservation found with your name.
customer: That's ok, thank you for the response.
agent: Thanks for reaching us.

Ex Output:
no_reservation