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

Input: Consider Input: customer: Hello.
agent: Hello, how may I assist you?
customer: Is it Central Booking Agency?
agent: Yes, say what help are you expecting from my side?
customer: Can you book a flight ticket from AUS to LGA?
agent: Sure, please mention your dates of trip?
customer: It's from 02/09 to 02/11.
agent: Ok, please hold on for a moment.
customer: Ok, take your time.
agent: Sorry, there is no flight is available as per your respective details.
customer: Ok, no problem.
agent: May I know your name please?
customer: Sure, my name is Brenda Clark.
agent: Thank you for your information.
customer: That's ok.
agent: You are welcome.

Output: no_flight

Input: Consider Input: customer: Hello,.
agent: Hello, how can I help you today?
customer: I have planned to travel from Houston, TX- IAH to Atlanta, GA- ATL.
agent: Sure, please provide me your journey dates?
customer: Sure, my travelling dates are from depart day on 11th Nov and return on 13th Nov.
agent: OK, please wait I will revert you in a while.
customer: OK, sure.
agent: Thank you for your patience. Sorry, there were no flights available on the specified dates you mentioned. May I know your good name?
customer: OK, no issues. Thank you the information. I am Mary Jackson.
agent: OK, thank you for contacting us, have a good day.

Output: no_flight

Input: Consider Input: customer: Hi.
agent: Hello.
customer: Kimberly Mitchell here.
agent: How can I assist you Kimberly Mitchell?
customer: Can you please help me in cancelling my recent reservation?
agent: Sure, I will help you with this. I have found your reservation in our database and I have successfully cancelled it.
customer: Thank you so much for your help.
agent: Thank you for utilising our service.
Output: cancel