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 help you? 
 customer: I am Betty Williams, help me to book a flight ticket on 08/18 to meet my step father at Philadelphia. Can you book a return ticket on 08/20? 
 agent: Sues, may I know your price limit for this journey? 
 customer: My budget is 5000 for flight ticket. 
 agent: Ok, please provide me your airport codes. 
 customer: I will fly from Orlando, FL-MCO to PA-PHL. 
 agent: Ok, let me check the availability on your route. 
 customer: Sure. 
 agent: Betty, Frontier airline is available with price 100 with single connection. Shall I proceed? 
 customer: Sure. 
 agent: Reservation has been done in 1028 flight. 
 customer: Thank you for helping me with booking. 
 agent: Thank you for opting us.

Ex Output:
book


Ex Input:
customer: Hello. 
 agent: Hello. How may I assist you? 
 customer: I want to cancel my recent reservation, can you please help me with this? 
 agent: May I know your good name please? 
 customer: I am John Jackson. 
 agent: Please give me a moment. 
 customer: Sure. 
 agent: There is a reservation found with your given name. Shall I proceed with the cancellation? 
 customer: Ok, please cancel my booking. 
 agent: Your ticket has been cancelled. 
 customer: Thank you for your help. 
 agent: Thank you for choosing us.

Ex Output:
cancel


Ex Input:
customer: Hi. 
 agent: Hello, how may I help you today? 
 customer: Please help me in booking flight ticket from DFW to MCO. 
 agent: Sure, can you please share me with your dates of journey? 
 customer: My trip dates are Sept 18 to Sept 20. 
 agent: Please mention your name? 
 customer: Jonathan Adams here. 
 agent: Are you expecting any other help from my side please? 
 customer: I need a connecting flight. 
 agent: Please wait for a moment. 
 customer: Ok. 
 agent: There is a connecting flight of fare 100 with the Frontier airline, shall I proceed with this booking? 
 customer: Make sure my return should be in the morning. 
 agent: Ok, I have reserved your ticket with the flight number 1013, your depart time is at 5:00 hours and return will be at 9:00 hours. 
 customer: You can book. 
 agent: It has booked successfully. 
 customer: Thank you. 
 agent: You are welcome, have a safe journey.

Ex Output:
book