You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you now?

USER: I am Timothy Young, I want to cancel my reservation due to sudden postpone of my interview. Can you aid me?

ASSISTANT: Sure, I will help you with cancellation.

USER: Thank you.

ASSISTANT: 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 informing me.

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