You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you now?

USER: My name is Gregory Davis and I would like to cancel my reservation.

ASSISTANT: Sure, I will help you with that. May I know your good name?

USER: Gregory Davis.

ASSISTANT: Please wait for a moment.

USER: Sure.

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

USER: No issue, thank you for the time.

ASSISTANT: Thank you for visiting us, we hope see you again.