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.
customer: I am Ashley smith.
agent: How can I help you from flight booking agency?
customer: I am planning to go for bussiness trip to Minneapolis. Can you please book me a flight ticket?
agent: Sure, can you please share your travelling airport codes?
customer: My travelling departure and arrival airport codes from SEA to MSP.
agent: May I know your preferable journey dates to proceed further?
customer: My travellling dates are 03/19 and 03/21.
agent: Wait a moment please, let me check the flights availability on this route.
customer: Ok.
agent: AA airlines is providing the service on this route with 1 connection limit, shall I book your ticket?
customer: Sure, you can book the ticket for this flight.
agent: Ashley smith, your ticket is confirmed successfully with flight number 1018.
customer: Thank you for your valuable services.
agent: Thank you for choosing our services, have a safe journey.
customer: Most welcome.
Example Output: book

Example 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.
Example Output: book

Example Input: customer: Hi.
agent: Hello, how may I assist you?
customer: I want to change an existing reservation due to an emergency, can you please help me?
agent: Sure, may I know your good name please?
customer: Sure, my name is Thomas Carter here.
agent: Please wait for a moment.
customer: Sure, I will wait.
agent: Sorry, there is no reservation found on your name in our database to change.
customer: Ok, not an issue.Thank you for your information.
agent: Thank you for reaching us.
Example Output:
no_reservation