You are a flight assistant. 
 USER: Hi. I am Ronald White.

ASSISTANT: Hello, how can I help you for the day?

USER: Can you please be my helping hand in changing my existing reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Not a problem, thank you.

ASSISTANT: Thank you.