Final answer:
The narrator feels disappointed and depressed when a customer enters his shop, as it does not live up to his expectations of a vibrant video store.
Step-by-step explanation:
The quotation that illustrates how the narrator feels when the customer enters his shop is from the excerpt that reads, "Aside from me, there was only one patron, a middle-aged woman, shopping as if she had been there before but did not know what she wanted. I started to become depressed. I was not sure exactly what I had imagined, but I knew this place was nowhere close.
I had convinced myself I was on a journey to find the "last great video store," an oasis of film, flowing with patrons renting Milk and American Honey." This passage conveys the narrator's initial hope and subsequent disappointment and depression when facing the reality of the store's situation, which fails to meet his expectations of a bustling, idealized establishment.