It varies from day to day. And like most industries that you haven't worked in, it is hard to describe. But mostly it is just making sure that customers are satisfied with the quality of the product that they receive.
I proved a brief relevant history. I work hard. Do not recall the entire answer. Gave examples where I had worked with people on difficult problems and difficult people on a routine basis. Gave examples where I had learned difficult concepts.
She kept asking me if I wrote for the school newspaper or if that was something I would be interested in. I pretty much just spoke about class assignments, but most of my work was analytical and not as descriptive as she was looking for.