Inevitably, the customer will answer ,"No thanks, I'm just looking" and end the conversation. Instead, instruct salespeople to ask, 
"Hi, have you been in our store before?" If they say no, the answer should be "Let me show you around." If they say yes, the response should be, "Welcome back, let me show you a couple of new things we just got in." That way, you don't give them an opportunity to say they want to be left alone. Role play these ideas with your staff today. Watch what a difference it makes.Barbara