One time when I was the last customer to shop before closing (yes, our stores close over night) a store employee bagged my groceries while I payed for them. It

One time when I was the last customer to shop before closing (yes, our stores close over night) a store employee bagged my groceries while I payed for them. It felt extremely awkward and I felt embarrassed and didn't know what to do. So I just stood there, watching as somebody else packed my stuff, smiled, said thank you, and left feeling really weird. I don't know how other people do it regularly.