There are several reasons for your reference:
1: It has to do with the depth of the friends you have made, just how many times you have met and done things, how do you make the other person remember it? Keep your name
2: It has to do with the way you introduce yourself. You didn’t sell yourself well. To be more precise, you failed to sell yourself. You must sell yourself before selling products, haha.
3: It has to do with social habits. Nowadays, there are several people who call each other by their first names. They all call them this sister, this sister, that manager, and this boss.
4: With It’s related to the way you speak. Maybe you don’t speak confidently enough. It doesn’t mean that you are annoying, and others may not remember it.