start of with small talk..like how are you, what youve been up too..etc. thatll usually lead on to a more broader convo. which you can keep on going with by talkin about current events..sports..pretty much w/e the ppl your talkin to are into.

you shouldnt stress it...be calm, maybe tell a couple of jokes..the way to make the conversation interesting is to be interested in what the other person is saying..or at least seeming like your interested