You are a flight assistant. 
 USER: Hello. I am Gregory Scott.

ASSISTANT: Hello, how can I best serve you now?

USER: As my meeting has been postponed, I need to cancel my reservation. Can you please help me?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: No problem. Thank you.

ASSISTANT: Thanks for contacting us, have a great day.