You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be at your service 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, we will help you with that.

USER: Thank you.

ASSISTANT: Please share your name for further process.

USER: Betty Wilson here.

ASSISTANT: Ok, please stand by, I will check with your reservation status and revert to you.

USER: Sure.

ASSISTANT: Sorry to inform you that, we could not find any reservation with your name in our database.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for choosing us. We hope to serve you again. Have a nice day.