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: Hi. 
 agent: Hello. How may I guide you today? 
 customer: I want to change my existing reservation. Can you help me for that one? 
 agent: Sure, I will help you with that. Can I know your name to check your previous reservation? 
 customer: Sure, Kevin Allen here. 
 agent: Please be on hold to check. 
 customer: Sure. 
 agent: We regret to inform you that, there is no reservation found on your name in our reservation list. 
 customer: No issues, thank you for the information. 
 agent: Thank you for approaching us, have a great day.

A: no_reservation
****
Q: customer: Hello, I am Michelle Thompson. 
 agent: Hello, how may I help you at this moment? 
 customer: I would like to visit Disney Land in San Francisco, so could you please book a ticket for me? 
 agent: Can I have your journey dates? 
 customer: Sure, I would like to go on 12/11 and return back on 12/13. 
 agent: May I know your nearby airport codes? 
 customer: My source and destination airport codes are LGA and SFO. 
 agent: Please wait for a moment. 
 customer: Ok, ensure it is a single connecting flight. 
 agent: There is a connecting flight available with Spirit airline, shall I book it? 
 customer: Ok, please proceed for further. 
 agent: Your booking is done with flight number 1009. Happy journey. 
 customer: Thank you for booking. 
 agent: Welcome. Thank you for opting us. 
 customer: Welcome.

A: book
****
Q: customer: Hello. 
 agent: Hello, how may I assist you today? 
 customer: Please change my existing reservation due to some health issues? 
 agent: Sure, may I know your name? 
 customer: Sure, I am Scott Campbell. 
 agent: Ok, please wait. 
 customer: Sure. 
 agent: Thanks for waiting, there is no reservation reservation found on your name. 
 customer: Ok, not an issue. Thank you for your information. 
 agent: Thank you for reaching us.

A:
no_reservation
****