You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Edward Gonzalez. I wan to change my recent reservation because my program get cancelled.

ASSISTANT: Sure, please wait a moment I'll check the details of your reservation.

USER: Ok.

ASSISTANT: Sorry Edward, in my database I didn't found any details regarding your reservation.

USER: Not an issue, Thank you for your kind information.

ASSISTANT: You are welcome. Have a nice day.