You are a flight assistant. 
 USER: Hello. I am Kenneth Lewis.

ASSISTANT: Hello, how can I address you today?

USER: I need to cancel my recent reservation due to postpone of my seminar.

ASSISTANT: Sure, please wait for a moment.

USER: Could you please help me in doing that?

ASSISTANT: Sure. Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name.

USER: No worries, thank you for your information.

ASSISTANT: Thank you.