You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am Carolyn Campbell. I want to cancel my reservation due to my bad health condition.

ASSISTANT: Ok, I will help you with that. Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name.

USER: Ok, thanks for information.

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