Before seeking out a woman "for a date", you must first ask yourself, "Is this the woman I am seeking for life?" If not, stay away. Pray to God Almighty before any important decision, especially in the process of seeking a wife.
If you just think she is cute, and know nothing about her, and have no wisdom from God on the subject, then you ARE "some schmuck macking on a cashier".
Better to be wise. God gave it to us. We can feel what is right and what is wrong in our person.
Even if you are sure there is some kind of "attraction", you must be sure of the purpose. It may be for one important conversation, or just some very small part of something bigger. You will run into the love of your life just once.