'I'm not a huge technology person, but ordering the flowers online through you was very easy. The service was excellent.'
'very prompt and polite service'
'Thank you for delivering the flowers in a timely manner ! It was last minute ordering and was very easy to figure out . Thanks again for assistance in this manner,'
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.