You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donald King.

ASSISTANT: How can I assist you at this moment?

USER: I want to cancel my reservation, due to heavy rainfall in Seattle, can you help me?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Please be hold on for a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry Donald King, no reservation has found under your name to cancel.

USER: That's ok, thank you for your information.

ASSISTANT: My pleasure. Thank you for choosing us, have  a good day.