You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you at this moment?

USER: Can you please help me in changing my recent reservation? As my planned trip has been postponed.

ASSISTANT: Sure, I will help you with that. May I know your name for further process?

USER: Sure, my name is Jonathan Anderson.

ASSISTANT: Ok, please wait a moment, I will check your reservation status.

USER: Sure.

ASSISTANT: There is no previous reservation available in your name Jonathan Anderson.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us, have a good day.