I've run mine low twice now. Firstly I just didn't check the level. I can't recall how much it took, but enough to make me worried I'd caused damage. Second time was when I had a bad oil leak from off-road and there was one big hill between where I was and my house which I REALLY didn't want to push the alp up. She still runs lovely though. Does use oil but doesn't smoke- I think the oil level drops because she still leaks a bit from the off-road incident, but it's impossible to say.
Fill her up, and she'll almost certainly be fine. Firstly, it's a honda, secondly, it's in such a soft state of tune you'd have to work a lot harder than that to damage it!! (But do check regularly in future!!)