You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: My Adventure trip got postponed, Can you please change my existing reservation?

ASSISTANT: Sure, may I know your name for the changing process?

USER: Sure, I am Stephen Wright.

ASSISTANT: Please, wait for a while.

USER: Ok.

ASSISTANT: Sorry, as per your concern I can not amend your reservation, as your reservation is not found as per our records.

USER: Ok, Thank you for your help.

ASSISTANT: Welcome, thank you for reaching us.