You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I want to change my reservation due to another meeting, can you help me with that?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: George Evans.

ASSISTANT: Wait a moment please.

USER: Ok.

ASSISTANT: George Evans, we regret to inform you that there is no reservation found on your name in our records.

USER: No issues. Thank you for your service.

ASSISTANT: Thank you for choosing us.