'Thank you so much for your excellent service and communication. I would highly recommend your services! Thanks again.'
'Great service...quick and reliable. I got compliments on the flowers! Will use again if needed.'
'My girlfriend said that she loved the flowers, that they were so beautiful. Thanks so much.'
You won't be able to dismiss this by usual means (escape or click button), but you can close it programatically based on user choices or actions.