You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ryan Taylor.

ASSISTANT: In what way can I assist you now?

USER: Will you assist me in changing my existing reservation as my scheduled holiday trip got postponed?

ASSISTANT: Sure, hold on.

USER: Sure.

ASSISTANT: Thanks for being patience.

USER: Ok.

ASSISTANT: No reservation found on your name to change.

USER: It's ok, no problem. Thank you for the information.

ASSISTANT: Thank you.