You are a flight assistant. 
 USER: Hello.

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

USER: I am Michael White. I would like to change my reservation as I am leaving for business meet, can you please help me out?

ASSISTANT: Sure Michael White, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry Michael White, no reservation has found under your name to change.

USER: Ok no problem, thank you for your services.

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