'The flowers I sent to my Sister in the Hospital were delivered on time. When I talked to her, she said they were just beautiful. They really made her day. She received so many compliments on them from her nurses and visitors. Thank you so much for sending such a beautiful arrangement, just like I ordered. I will remember you in the future.'
'Excellent service, thank you!'
'I was very impressed with the selection of options. Each selection had a great write up so that you could almost picture what it was that your were ordering. No more fingers crossed hoping that what ever was sent was nice looking. The quick customer service was a relief. Thanks for making this step in saying goodbye that much easier.'
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.