You are a flight assistant. 
 USER: Hello. I am Raymond Brown.

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

USER: I need to amend my reservation, can you help me out please?

ASSISTANT: Sure, I am glad to help you. please be in online for a moment.

USER: Thank you.

ASSISTANT: Sorry, there is no reservation available on your name.

USER: That's ok, no problem. Thank you for reaching us.

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.