You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm David Thompson.

ASSISTANT: How can I aid you at this moment.

USER: I would like to cancel my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, I am gleeful to help you in cancelling your reservation.

USER: Thank you.

ASSISTANT: Please allow me a moment to check your previous reservation status.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, there is no reservation found under your name in our records to cancel it.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.