You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I am James Scott.

ASSISTANT: Welcome to flight booking agency James.

USER: As my I have booked a flight ticket in your agency, as I got an emergency work I would like to change my reservation.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: I am very to inform you but there is no reservation found by your name James Scott.

USER: Ok, thank you for your quick assistance.

ASSISTANT: Thank you for reaching our services.