'Thank you for your prompt service upon a short notice.'
'Very easy to order via website. Keep in mind the cost will be $35 - $40 more than the cost of the flowers with the taxes and fees.'
'The casket spray was absolutely beautiful we could not have asked for anything nicer. We where very pleased thank you 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.