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

ASSISTANT: Hello, how can I help you?

USER: Can you please assist me in cancelling my reservation as the meeting which I have scheduled to attend got postponed?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: It's ok, thank you for your kind information.

ASSISTANT: Thank you.