You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Actually, I have done reservation to travel New York.But, due to heavy work in the office I am willing to postpone my journey. So, can you please help me in changing my reservation to some other day?

ASSISTANT: Sure, I will help you. May I know your name for searching reservation.

USER: Sure, myself Debra King.

ASSISTANT: Sorry, In my database I did not find any reservation with your name. Anything else to help you.

USER: Ok, it might not have confirmed for me. No, thank you for the help.

ASSISTANT: Most welcome.