You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you today?

USER: I am Patrick Carter.

ASSISTANT: Ok.

USER: I made a earlier reservation to sign a contract for my new project, due to some financial problems it got postponed. Can you please change my existing reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name in our reservation list.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for approaching us, have a nice day.