It would be dialogue because there are no stage directions and this is not narrating anything.
A chain or garland of flowers, leaves, or ribbons, hung in a curve as a decoration
synonyms garland, chain, lei, swathe, swag, loop
OR
Adorn (a place) with ribbons, garlands, or other decorations
synonyms decorate, adorn, ornament, trim, hang, loop, drape, swathe, garland, wreathe, bedeck
We went out for something to eat, (After) the dance was finished.
