I put dialogue in the title but that is probably not what it's called.

How do you sing "and with your spirit" and "it is right and just"

The Lo-ord be with you
And wi-ith your spi-rit ???

Links would be really helpful!

It's chanting, and my advice is to just chant it however the priest and the congregation chant it....I don't think there is any official 'setting' for it....just go along with however every else does it in the parish you are at....

Right, chant! Chant notation?
I asked because everyone in the congragation is singing something different and it doesn't sound very good because of that. I imagine there would be an official or common practice, like we had before the new translation. Maybe in the Roman Missal they have on the altar it's listed? I think I've seen this somewhere ......

It is in the Missal.

I've seen it in missalettes in semi-modern notation.

That's how it is in the missals I have seen as well, but the OP will probably find it easier to obtain a missalette, 'tis true.

Here's a link:

http://www.icelweb.org/musicfolder/openmusic.php

Here's the direct link to the exact one you want, I think, in PDF form: http://www.icelweb.org/musicfolder/open ... alogue.pdf