You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need to change my boarding point of my existing reservation as I need to go to other place first and I will start from there. Can you help me out with this?

ASSISTANT: Sure, may I know your good name?

USER: My name is Ronald Allen.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.