You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you?

USER: I am Nicholas White. I just want to cancel my recent reservation due to my planned trip got postponed. Can you help me?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

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

USER: Ok, thanks.

ASSISTANT: Thank you for reaching us.