Sylvester "Sly" Bell, an employee at Goody Goody Diner (5900 Natural Bridge Ave., 314-383-3333), pauses an interview with a reporter as he watches a customer who had just finished her meal head for the door. "Hold on one second," he says before addressing her."I know you're about to leave, but this I want to say: If you don’t give up you will win.…