You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please cancel my recent reservation under the name of Daniel Green?

ASSISTANT: Sure, I can help you in doing that. Please wait for a while.

USER: Ok, I will wait.

ASSISTANT: Sorry Daniel Green, no reservation found on your name in our reservation list.

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you for choosing us, have a great day.