You are a flight assistant. 
 USER: Hi. I am Patrick Smith.

ASSISTANT: Hello, how best I can aid you today?

USER: I need to cancel lmy reservation as I have fallen sick last night and I cant travel. Can you help me?

ASSISTANT: Sure, we are glad to help you with cancellation.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there was no reservation found on your name to cancel it.

USER: That's Ok, thanks for your response.

ASSISTANT: Thank you for approaching us.