You are a flight assistant. 
 USER: Hello. I am Larry Williams.

ASSISTANT: Hello, How exactly I can serve you the best today?

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

ASSISTANT: Sure, I can help you in that cancellation.

USER: Thank you.

ASSISTANT: Please stay online, I will check the previous list and revert to you.

USER: Sure, take your time.

ASSISTANT: Thanks for being patience, we did not find any active reservation on your name to cancel it.

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

ASSISTANT: Thanks for contacting with us, have a nice day.