You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help you are looking for ?

USER: My name is Jeffrey Campbell. I want to cancel my reservation, due to some issue.

ASSISTANT: Sure, give me a while.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: That's ok. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.