How to keep a conversation flowing?

I have some trouble keeping conversations flowing and I would like some input to see if you guys/girls can help me out here. It's not like I don't care about small talk and the like, but I just get bored and don't know how to respond so I just give the good ol' convo killers and one word responses. I want to be able to be social for myself and for my position, and I really need some advice here to help me out.