You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I amend you the best?

USER: I need to change my reservation as my meeting place got changed to Dallas, can you please help me?

ASSISTANT: Sure, I can help you as you requested. May I know your name please?

USER: I am Joseph Collins.

ASSISTANT: No reservation has been registered with us on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for picking us, have a nice day.

USER: Thank you.