You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: I am Larry Taylor, want to change my existing reservation. Will you please help me with that?

ASSISTANT: Sure, Taylor. Wait for a while, I will check your reservation status.

USER: Sure.

ASSISTANT: In our database, there is no reservation found on your name.

USER: Oh! It's ok, no issue.

ASSISTANT: Do you need any other help from us, Taylor?

USER: No, thank you.

ASSISTANT: Fine, thank you for reaching us.