How do i pick up a complete stranger i like?

[Duane]

Hey i have recently been pretty badly hurt by this girl i liked so much i thought it was love!! anyway i realize the only way i can get over this situation is if i have another special girl in my life. Im no longer in a school i do my studies at home. I work at a supermarket in the liquor department and i always see cute girls and make eye contact with them, after its clear that we are both interested in each other i don't know where to take it from there!!? im working so i cant just stop and start a conversation with her!! what do i do? how can i somehow get a number or something!?
PS: its not one girl that im interested in theres always new girls coming through the supermarket that give me a look and i make eye contact with them too! if i wink thats cute and flirty but i dont know anything about these girls and i dont know there names or friends or anything!! keep in mind SHES A COMPLETE STRANGER TO ME.