'Flowers were nice thank you'
'My rep Sierra was awesome! She completed the process with no issues. And even made a change for me after the request was made. The flowers arrived on time and we're beautiful. I will recommend this ervice to my friends.'
'Dear sir/madam, We have received the flowers. Thank you! The arrangement was large, fresh and of colors we ordered. Even if we would prefer calla lilies, as we ordered, we are still satisfied, the replacement were beautiful orchids. The only one note would be from us: the message was on a plain paper and not printed. We expected it to be on a card. Other then that we are happy with the purchase.'
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.