You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: I am Larry Gonzalez. Can you please change my reservation?

ASSISTANT: Ok, please allow me to check with your previous booking for a moment.

USER: Sure.

ASSISTANT: Larry Gonzalez, there is no active reservation by your name.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for approaching our services.