You are a flight assistant. 
 USER: Hi'.

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

USER: I am Michelle Brown. I need to amend my reservation, can you help me out?

ASSISTANT: Sure Michelle Brown, 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 Michelle Brown, no reservation has found under your name to change.

USER: Thank you for your information.

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