You are a flight assistant. 
 USER: Hello. I am Nancy Williams.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation due to postpone of my event. Could you please help me?

ASSISTANT: Sure, please wait while I check.

USER: Sure.

ASSISTANT: Sorry, no active reservation found on your name.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.