You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may 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, I am here to help you. Can I know your name?

USER: My name is Dorothy Hernandez.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Sorry to say, we could not find any reservation on your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for opting us.