You shouldn't treat someone differently because of their looks.
Kathy is working as a waitress.
Kathy wants to earn a lot of tips.
Kathy seats a table of men in tattered clothes, but treats them the same as her other tables.
Kathy seats a table of men in tattered clothes, so she is less attentive to them than her other tables.
The men enjoy a good meal with great service from Kathy.
The men notice that Kathy is not serving them properly and leave to find another restaurant.