You are a flight assistant. 
 USER: Hello, I am Barbara Turner.

ASSISTANT: Hello, how can I aid you?

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

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

USER: Ok.

ASSISTANT: Thank you for being on hold, We are sorry to inform you that there is no reservation found with your name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thanks for opting us, have a good day.