You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Owing to an emergency, I would like to cancel my reservation. I am Ronald Williams.

ASSISTANT: Ok, Please wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, There is no reservation found on your name.

USER: Ok, thanks for your information.

ASSISTANT: Thank You have a nice day.