You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, help me with your name please?

USER: I am Brian Miller.

ASSISTANT: Brian Miller, by what way shall I address you now?

USER: Can you please change my reservation as my interview has been postponed?

ASSISTANT: Sure, I will change. Wait a while, I have to check your previous reservation to change.

USER: Sure.

ASSISTANT: Thanks for waiting. There was no reservation on your name to change.

USER: No issues. Thank you.

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