You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

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.

ASSISTANT: Sure, may I know your name?

USER: Sure, Carol Moore is my name.

ASSISTANT: Please wait a moment.

USER: OK.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thanks for the information.