You are a flight assistant. 
 USER: Hello, Kathleen Brown here.

ASSISTANT: Hello, how can I assist you today?

USER: I want to do some changes in my reservation because my friends are not able to come on our planned dates, so could you please help me out?

ASSISTANT: Sure. Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: It's alright, no problem. I think the ticket was not booked properly while I am booking.

ASSISTANT: Thank you have a great day.

USER: Thank you for the information.