You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation, due to some health issue. Can you help me?

ASSISTANT: Sure, may I know your name?

USER: Yes, I am Joshua Lewis.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: That's fine, not an problem.

ASSISTANT: Thanks for reaching us.

USER: Thank you for your help.