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: Hi. 
 agent: Hello, how may I abet you? 
 customer: Catherine Hall here, please cancel my reservation which I have done previously. 
 agent: Sure, may I know your good name? Thank you for providing your name, please hold on. 
 customer: Sure, I will wait for your response. 
 agent: No reservation found on your name. 
 customer: It's ok, thanks for your information. 
 agent: Thank you for choosing us, have a nice day.

Ex Output:
no_reservation


Ex Input:
customer: Hello. 
 agent: Hello. How can I help you? 
 customer: Being a scientist, I have to give a seminar at Austin, AUS. This is the reason for booking a ticket on 11/23. Will you help me? 
 agent: Sure, I am here to help you. 
 customer: Ok. 
 agent: Can I know your source code please? 
 customer: Book a ticket from Charlotte, CLT. 
 agent: Ok, may I know when you want to return? 
 customer: 11/25 is my return date. 
 agent: Do you need any halt in between your journey? 
 customer: Yes, I need a halt. 
 agent: Wait a minute please. 
 customer: Sure. 
 agent: Thank you for waiting, we found a flight with number 1026 and airline AA at a price of 200 with 1 connection. Shall I proceed? 
 customer: Ok, book my ticket with this flight. 
 agent: Sure, your booking is done. 
 customer: Thank you for your service. 
 agent: May I know your name please? 
 customer: Reserve a ticket with the name of Gary Phillips. 
 agent: Thank you for reaching us, have  a nice day.

Ex Output:
book


Ex Input:
customer: Hi, I am Joshua Phillips. 
 agent: Hello, how can I assist you? 
 customer: I have heard that Orlando is the best place for site seeing. So, can you book a flight ticket from Philadelphia, PA - PHL? 
 agent: Sure, we are here to help you. Can I have the exact airport code of Orlando? 
 customer: Sure, my destination code is FL - MCO. 
 agent: How much can you afford for this trip? 
 customer: I can afford up to 500. 
 agent: When are you planning to go Orlando? 
 customer: I want to travel on 07/19. 
 agent: Ok, do you need a stopover in between your route? 
 customer: Yes, I need a stopover. 
 agent: Please help me with your return date. 
 customer: My arrival date is on 07/21. 
 agent: Joshua, there is a flight from Frontier airline with fare 100 only. Shall I proceed with the booking? 
 customer: You may proceed if it is a connecting flight. 
 agent: Yes, it is a connecting flight. 
 customer: Thank you for your support, regarding flight booking process. 
 agent: Your reservation is confirmed with flight number 1005 on your name Joshua Phillips. Thank you for consulting us. 
 customer: Thank you.

Ex Output:
book