If i'm out on the dirt & see someone stopped, I normally say "You ok yo?". I might not have the item they require but at least I offered. Same at XC events-i'm not in to win (rather just trying to beat my previous times & conquer stuff) so am happy to assist in some way.

A while back Ian was going to bunnings for something & as he turned from our street he noticed a cyclist walking for some reason. The gent had a flat along the bike path a few hundred meters away so Ian invited him back to our house & offered our floor pump as the gent fixed his tire. Nice guy & bike!

We have a floor pump in our ute & if i see a roadie stopped fixing thier bike, i'll stop & offer it.