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

Q: customer: Hello. 
 agent: Hello, how may I help you? 
 customer: Can you please help me in booking the flight ticket from LGA to IAD? 
 agent: Do you have any requirements? 
 customer: I prefer to travel in normal cost airlines with direct flight. 
 agent: Can you please share your travelling dates? 
 customer: My travel dates are 11/09 and 11/11. 
 agent: May I know your name? 
 customer: My name is Charles Phillips. 
 agent: Sorry to say, no flight is available for you. 
 customer: Ok, thank you for the information. 
 agent: Thank you for reaching us.

A: no_flight
****
Q: customer: Hello. 
 agent: Hello, how may I assist you at this moment? 
 customer: I need to cancel my reservation as I need to stay back in own city, due to my house has collapsed by Floods. 
 agent: May I know your name to track your details? 
 customer: Sure, I am Patricia Roberts. 
 agent: Ok, please give me a minute. 
 customer: Sure. 
 agent: Thanks for your time, no reservation was found based on your name. 
 customer: Ok, Thank you for your service. 
 agent: Thank you for consulting us.

A: no_reservation
****
Q: customer: Hi, I am Patricia Green. 
 agent: Hello, How can I assist you? 
 customer: As my plan to meet my uncle got postponed, can you please help me in changing my existing reservation? 
 agent: Sure, I am blissful to help you. Please wait a while. 
 customer: Sure. 
 agent: Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name. 
 customer: That's ok, thank you for the information. 
 agent: Thank you for choosing us, Have a great day. 
 customer: Thank you.

A:
no_reservation
****