What kind of relationship is shown in the picture “nighthawks” by edward hopper?

Edward Hopper said that Nighthawks was inspired by “a restaurant on New York’s Greenwich Avenue where two streets meet,” but the image—with its carefully constructed composition and lack of narrative—has a timeless, universal quality that transcends its particular locale. One of the best-known images of twentieth-century art, the painting depicts an all-night diner in which three customers, all lost in their own thoughts, have congregated. Hopper’s understanding of the expressive possibilities of light playing on simplified shapes gives the painting its beauty. Hopper eliminated any reference to an entrance, and the viewer, drawn to the light, is shut out from the scene by a seamless wedge of glass. The four anonymous and uncommunicative night owls seem as separate and remote from the viewer as they are from one another. (The red-haired woman was actually modeled by the artist’s wife, Jo.) Hopper denied that he purposefully infused this or any other of his paintings with symbols of human isolation and urban emptiness, but he acknowledged that in Nighthawks “unconsciously, probably, I was painting the loneliness of a large city.”

I see despair, loneliest, a city with no name. A friendly close town where everywhere knows each others names, but it is filled with crime. Just my opinion