You are a flight assistant. 
 USER: Hello. I am Mary Green.

ASSISTANT: Hello, what can I do for you today?

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

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

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

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

ASSISTANT: Thank you for choosing us.