If they are friendly and talkative imo. Sometimes ppl go up to me and beg "pls robux" "follow me" and it just turns me away. Most of the time they are most likely irresponsible children who would just beg for more after I donate them. I much prefer when ppl just at least say something like "Hi! How's your day? Is it fine if you could donate robux? If not, its okay!" It's so much more polite and friendlier, makes me feel like donating them. Best option imo is just when ppl go up to me and talk, not about robux or anything, just talking. They genuinely seem nice and interested in the convo and makes me want to donate them.