You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I amend you today?

USER: I am Catherine Parker.

ASSISTANT: Ok.

USER: I already have an reservation to attend at my meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation.

ASSISTANT: Sure, I am here to help you. Please wait for a while, I will revert to you.

USER: Sure.

ASSISTANT: We did not find any reservation with your name to proceed further.

USER: No issues. Thank you.

ASSISTANT: Thank you for choosing us, Have a nice day.