It's not sexual harassment, it's flattery to get you to do a favor for them. They would never sleep with you. It's also extremely normal and anodyne.
Why do men think sexism is symmetrical? The reason sexual overtures from men are a problem is because they are usually serious and they are statistically threatening, because men often hurt women who don't respond to them in a way they deem appropriate. You would never fear this woman.
As a fearful anxious man - Don't presume to know what I fear.
I expect variation in the women I meet, some will be scared of me and some have much bigger balls than I do. If I calibrate my banter such that 1% of women are scared, am I in the wrong?