You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

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, please share your name to find existing reservation.

USER: My name is Janet Miller.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: I did not found any reservation on the name of Janet Miller to change.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for opting us.