This helps you to gain confidence and have a ready repertoire of things to say to keep the conversation going. Some of the things you could talk about include the weather, your studies/work assignments, recent achievements, places visited, movies seen, news stories of relevance or something you have in common with the person. Seek to make people laugh. Whether it's asking where your cell phone is when you're holding it or saying something wrong accidentally (or so they think), people like somebody who makes them laugh. Prepare yourself in advance by writing down and memorizing a few jokes. Or, find other fun things to share, such as stories about silly things that have happened to you. Remember that a lot of conversation is about encouraging the other person to do the talking, so be ready to listen carefully and act as a sounding board, feeding back summaries of what the other person has said to you. If you're nervous about talking to new people, ask your friends and family about what to say, and what to do if you say the wrong thing. Your friends and family won't mind you asking for tips on what to say to people.

Summary:
Try writing down all the things you want to say to other people. Teach yourself to listen well. Talk to people you know and trust to gain more tips.