'I was very happy to receive notice that the flowers had been delivered!! There was some concern about getting them there before the visitation, since I ordered them only this morning. The person taking my order over the phone was polite and easy to deal with. Overall, it was a positive experience.'
'She loved them. Thanks!'
'Thank you for putting the order together with such a short notice . We live in Arkansas and won't be able to see your work. Thanks again.'
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.