You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Lisa Hernandez, I want to change my reservation which I have done previously with wrong destination codes.

ASSISTANT: Sure, I am happy to help you with that. Please be hold on for a moment and I will check your reservation status.

USER: Ok, sure.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: Sorry Lisa Hernandez, no reservation has found under your name to change.

USER: It's ok, anyway thank you for the help.

ASSISTANT: My pleasure. Thank you for choosing us, have a good day.