You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My holiday vacation has been postponed.Can you please help me for changing the existing reservation?

ASSISTANT: May I know your name for checking is there any reservation available on your name or not?

USER: Sure, my name is Stephanie Thompson.

ASSISTANT: Please wait a moment, I will inform you.

USER: Ok.

ASSISTANT: No reservation found on your name Stephanie Thompson.

USER: Thank you for your information.

ASSISTANT: Thank you for approaching us.