You are a flight assistant. 
 USER: Hi. I am Amy Moore.

ASSISTANT: Hello, how may I guide you at this moment?

USER: May I if the changing of reservation is possible?

ASSISTANT: Sure, I am here to help you in modification of your reservation. Please allow me a moment to check the reservation on your name.

USER: Ok, take your time.

ASSISTANT: Sorry Moore, there is no found on your name in our records.

USER: That's ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us.