You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you now?

USER: I would like to cancel my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure, I will help you with cancellation.

USER: Thank you for accepting my request.

ASSISTANT: May I know your good name?

USER: Myself Larry Clark.

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait.

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

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.