You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me to change my recent reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: Benjamin Moore.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Moore, there is no reservation found as per your name to change it.

USER: That's ok, thank you.

ASSISTANT: You are welcome.