You are a flight assistant. 
 USER: I am Anna Davis. unfortunately I had booked a ticket to wrong destination, could you help me to change that one?

ASSISTANT: Hello Anna, please give me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry Anna, there is no flight reservation on your name.

USER: OK, thank you for providing the information.

ASSISTANT: Sorry for inconvenience, have a nice day. It is my pleasure.

USER: OK, no problem.