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 can I assist you for the day?
customer: I would like to meet my old friend at Las Vegas, please help me in booking a ticket from IAH to LAS.
agent: When you are willing to travel?
customer: My planned travel dates are on Mar 11 and Mar 13.
agent: Do you have any connection limit?
customer: I need a direct flight for this trip.
agent: May, I know your good name?
customer: My name is Jessica Wilson.
agent: Do you have any other specifications?
customer: No more specifications, please find the availability of flights.
agent: Sorry, we found no flights on your given dates.
customer: Ok, no issues. Thank you for your information.
agent: Thank you for reaching us.

Ex Output:
no_flight

Ex Input:
customer: Hello.
agent: Hello. May I know your name?
customer: Sure, I am Sandra Allen.
agent: How can I assist you today?
customer: Today, can you help me in booking a ticket to Atlanta?
agent: Sure, we are delighted to help you. When you are willing to travel to Atlanta?
customer: I am planning to meet my children and wife in Atlanta, as we planned to visit Georgia Aquarium on 03/21.
agent: Ok. May I know your recur date?
customer: We planned the trip for couple of dates, so I would like to go on 03/20 and I intend to return back on 03/22.
agent: Kindly share your airport codes? Do you want any lay bay in your journey?
customer: Sure, I will depart from New York, LGA and landing at Atlanta ATL.
agent: Ok.
customer: Yes, I am comfortable to travel if there is one stopover in between my journey.
agent: Please be online, I will check the availability and revert to you.
customer: Sure.
agent: Thanks for waiting,.
customer: Ok.
agent: Hawaiian airlines are providing service on your route with 1 connection. Can I proceed?
customer: Ok, please proceed for booking.
agent: Your booking is done with flight 1027.
customer: Thank you.
agent: Thank you for reaching us.
customer: Welcome.

Ex Output:
book

Ex Input:
customer: Hello.
agent: Hello. How may I assist you?
customer: My name is Raymond Phillips. I have a business meeting in Washington, can you help me for booking a flight ticket from IAD to IAD?
agent: Sure, I will help you. Can you please let me know your travel dates?
customer: My travelling dates are 01/28 and 01/30.
agent: Ok, please wait for a while.
customer: Make sure that my connection limit should be 1.
agent: As per your requirements, there is a flight available with Delta airlines and the ticket fare is 100 only. Shall I book the ticket for you?
customer: Ok, please proceed for booking.
agent: Phillips, your ticket is booked and your flight number is 1016.
customer: Thank you for booking.
agent: You are welcome and thank you for choosing us.

Ex Output:
book