'My girlfriend said that she loved the flowers, that they were so beautiful. Thanks so much.'
'Very nice arrangement of flowers'
'I was told the flowers were very nice,since I live so far away and could not see them .I am very thankful you did such a nice job on them. Thank you very much carol'
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.