You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Paul Hill. I am planning to cancel my recent  reservation, due to health issue.

ASSISTANT: Yes Hill, please explain in brief for which service you approached us.

USER: Can you help me out?

ASSISTANT: Yes, please allow me a  minute.

USER: Sure, take your time.

ASSISTANT: Hill, in our portal we haven't found any reservation with your credentials.

USER: That's fine.

ASSISTANT: Sorry for the inconvenience.

USER: Thank you.

ASSISTANT: Thank you for approaching us.