interjection/sa va/
how are you? how's it going? how are things?; things are going fine; OK, all right, sure, sure thing, sounds good, that's fine, that works for me
“- Ça va? - Oui, ça va bien.” — How's it going? - It's going fine.
Literally, “it goes”; compare English how's it going?, German wie geht es?.