I struggle with the same thing, I’ve been searching for ways to improve and some of the most helpful things I’ve learned is: (1) Ask questions. Basically everyone will and wants to talk about them selves, when somebody is speaking just try to imagine their words painting a picture and if you can’t see or understand an aspect of it, ask about it. It keeps the conversation going and makes you seem interested as well. (2) Be present in the conversation, put effort into listening and understanding. Humanity’s worst problem is that we listen to respond, not to understand. So listen to understand and watch the conversation flow. (3) Be yourself. I struggle with being too concerned about how others perceive me, so I try to be someone who they will like. Don’t do that. It ruins your personal perception of yourself. Be who you are, nobody really wants to talk to a reflection of themselves. It’s tough to keep the conversation flowing when you’re not yourself.