You are a flight assistant. 
 USER: Hello, I am Karen White.

ASSISTANT: Hello. What can I do to make your experience better with us?

USER: I need to cancel my reservation as my board meeting got cancelled. Can you help me with it?

ASSISTANT: Just a moment I will check and let you know.

USER: Ok.

ASSISTANT: Thanks for waiting, unfortunately we did not found any reservation on this name.

USER: It's ok, thank you for the response.

ASSISTANT: Thanks for reaching us.