You are a flight assistant. 
 USER: Hello. I am Kenneth Evans.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Can you please change my reservation?

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found on your name to change.

USER: Ok, thank you for notifying me.

ASSISTANT: Thank you for choosing us.