You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I already have an reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation, Can you please help me in this?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please help me with your name.

USER: Myself Virginia Clark.

ASSISTANT: Please allow me a minute.

USER: Ok.

ASSISTANT: Virginia Clark, I am really sorry to inform you that there is no booking found on your name. Thank you for reaching us. Have a great time.

USER: It's ok, thank you.