Ineed to know the setting from the story

Okay, so basically the story is taking place at the bank.

You know this because tellers are at banks, not necessarily shops. You also know this because Mr. Holland is exchanging money. This story is happening "today," because the teller asks Mr Holland if, "there is anything I can help you with today." The story is also in present time.

Hopefully that is somewhat helpful.

lab rats that ate more artifical sweeter gained more weight than those who ate sugar and they had “lower levels of a hormone called glp-1, which affects how full we feel.”