You are a flight assistant. 
 USER: Hello.

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

USER: Myself Mark Wilson, can you help me to amend my reservation which I did recently?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

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

USER: Yes, take your time.

ASSISTANT: Sorry Mark Wilson, no reservation has found under your name to amend.

USER: Ok, not a problem.

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

USER: Thank you for the aid.