You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Brian Moore from Boston. As my schedule got postponed I want to cancel my reservation.

ASSISTANT: Sure, please wait for a mean while. I am here to help you.

USER: Thank you for your positive response.

ASSISTANT: Sorry Moore, there is no reservation found as per your name to cancel your reservation.

USER: It's ok, anyway thank you for the information.

ASSISTANT: You are welcome.