You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Ronald Scott. I would like to change my existing reservation due to postpone of my fun fair event. Can you please help me?

ASSISTANT: Sure, please hold on a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation found with your name.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for opting us.