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, Benjamin Hill here. 
 agent: Hello. Hill, how can I assist you? 
 customer: I want to meet my business partner in casino, could you book my ticket from SEA to LAS? 
 agent: Please provide me your travel dates for further process. 
 customer: My trip dates are 11/29 and 12/01. 
 agent: Please wait. 
 customer: Sure. 
 agent: Sorry, no flight is available for you. 
 customer: It's ok, thank you. 
 agent: You are welcome.
[A]: no_flight


[Q]: customer: Hello. 
 agent: Hello, how may I assist you today? 
 customer: Edward Young here. I would like to change my recent reservation, can you help me? 
 agent: Ok, let me check with your existing reservation for a moment. 
 customer: Sure. 
 agent: Thank you for waiting. 
 customer: It's ok. 
 agent: I'm so sorry to inform you, there is no reservation found by your name in our data base. 
 customer: That's fine, anyway thanks for your help and valuable information. 
 agent: Thank you for approaching our agency.
[A]: no_reservation


[Q]: customer: Hello. 
 agent: Hello. How may I aid you? 
 customer: I am planning to change an existing reservation, due to health issue. Can you please help me out to change my reservation? 
 agent: Sure, I am here to help you. 
 customer: Thank you. 
 agent: May I know your name to check your previous reservation status? 
 customer: I am Kathleen Rodriguez. 
 agent: Ok, please give me a moment. 
 customer: Sure, I will wait for your reply. 
 agent: Sorry, there is no reservation found on your name in our records to modify. 
 customer: That's fine, thank you you for your help. 
 agent: Thank you for reaching us.
[A]:
no_reservation