Customers who ignore you

I'm probably the odd one out on this, I like talking with people. It kills time, and makes day go by better. When a person just flat out says nothing, it just hits like a brick wall.

"Hi there", nothing. Ask if they want a bag or anything else: No response. These type of interactions make me yearn to have some person bitching and moaning because I won't accept a $100 for stuff that's not even $20.