You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Ronald Jones.

ASSISTANT: Nice meeting you Ronald.

USER: I want to change my travel dates, can you please help me with that?

ASSISTANT: Sure, I am gleeful to help you.

USER: Thank you.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Oh! It's ok no problem.

ASSISTANT: We regret that, there is no reservation found with your name in our records.

USER: Thank you for your information.

ASSISTANT: Thank you for approaching us, have a great day.