Other than stuff like being a waiter or like selling magazine subscriptions on street, what are the part time jobs that you talk to people face to face constantly?
I manage a boutique as a part time job while I'm at university.
There's a lot of face to face communication, but you already have to be pretty good at it to get that kind of job so if you're looking to practice and improve you need to already be at an above average place.
This, was a salesman for an auto part store. You Meet people from all walks of life, some cool people, some dumb pieces of shit who you will want to stab in the throat, and everything in between. I began to fucking loathe working there, but at the end of the day I'm glad I did, was a great learning experience for social skills, what really made it difficult was I know VERY little about autoparts, mechanics, I just knew enough to sell them what they needed, and that I needed to be friendly as fuck and have good customer service, because that was the only way I'd be a relatively decent salesman, without knowing wtf I'm talking about most of the time, and I think the skills will stick with me a bit forever as well even though I'm working mostly solitary now, would definitely. Recommend to someone young or that needs to hone their social skills
Cashiers and salespeople. Cashier probably fits your description better because from what I know the shifts are more sporadic and large stores can hire flexibly. So a 20 hour a week cashier job is really feasible.