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: Hello.
agent: Hello. How may I guide you today?
customer: Owing to an emergency, I just need to cancel my recent reservation. Can you please aid me with cancellation?
agent: Sure, I will help you with that.
customer: Thank you.
agent: May I know your name please?
customer: Sure, Emma Anderson is my name.
agent: I am sorry to say that there is no reservation found under your name.
customer: That's Ok, thanks for your service.
agent: Thank you for reaching us.

Ex Output:
no_reservation

Ex Input:
customer: Hello.
agent: Hello. How can I help you?
customer: I have planned to book a flight on June 14th, so please help me in booking a flight.
agent: Sure, may I know your airport codes please?
customer: My airport codes are LAS - BOS.
agent: Your return journey date please?
customer: I intend to return on 16th June.
agent: Do you have any specifications?
customer: I would like to depart in morning time.
agent: Any thing else?
customer: I prefer an economy class.
agent: May I know your name please?
customer: Sure, my name is Daniel Moore.
agent: I am sorry no flights found your route.
customer: No worries, thank you.
agent: Thank you for choosing us.

Ex Output:
no_flight

Ex Input:
customer: Hi.
agent: Hello, how may I aid you today?
customer: I need to cancel my ticket due to my health issue, can you help me with that?
agent: Sure, I am here to help you out. Please provide me your name to check the reservation status.
customer: I am Elizabeth Perez.
agent: Please allow me a moment.
customer: Sure.
agent: Sorry Elizabeth Perez, there is no active reservation on your name in our database.
customer: That's ok. Thank you for your service.
agent: Thank you for reaching us.

Ex Output:
no_reservation