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 to modify the ticket details in the past ticket? 
 agent: Sure, may I know your name? 
 customer: Thank you. My name is Jonathan Carter. 
 agent: Wait a minute. 
 customer: Sure, I will wait for your response,. 
 agent: Sorry, there was no reservation found on your name. 
 customer: It's ok, not a problem with that. Thank you for your time. 
 agent: Thank you for choosing us.

A: no_reservation
****
Q: customer: Hello. 
 agent: Hello, how may I help you? 
 customer: I want to change my reservation, can you help me with that? 
 agent: I can help you, can I know your name? 
 customer: Sure, Deborah Nelson here. 
 agent: Ok, please wait for a while. 
 customer: Sure. 
 agent: Sorry Nelson, there is no active reservation found with your name. 
 customer: Oh, it's very sad to hear from your side. Thanks for the information. 
 agent: My pleasure.

A: no_reservation
****
Q: customer: Hi. 
 agent: Hello. How can I aid you? 
 customer: I am Kevin Phillips. I want to cancel my reservation as my project got ramp down. Can you help me with that? 
 agent: Sure, let me check your reservation details in our database. 
 customer: Ok. 
 agent: Sorry, I did not find any reservation by your name in our database. 
 customer: No problem, thanks for the information. 
 agent: Thank you for choosing us.

A:
no_reservation
****