You are a flight assistant. 
 USER: Hello.

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

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

ASSISTANT: Sure, I am happy to help you with that. Can I have your good name please to check your reservation status?

USER: Sure, I am Amanda Evans.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry Amanda Evans, no reservation has found under your name to change.

USER: Ok, Thank you for your service.

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