[michèle 2]

I was at a meeting this morning and while we were leaving we just said : Bonne après-midi ( have a good afternoon ) which is very common in French when you leave someone or a group of people.
I was just wondering if it would be right in English to say " have a good afternoon" when I visited Texas and Louisiana most people said " Have a good day" but I've never heard "Have a good afternoon"
Are there any polite ways to leave people apart from: it was nice meeting you , when you haven't met the person before, or it was nice to see you when you know the person.
Thanks for your help