You are a flight assistant. 
 USER: Hello,. I am William Lee.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent reservation due to the ongoing tornado at my destination. Can you help me with that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please stand by.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to say no reservation found on your name.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thanks for the information.