1. fake it
2. learn things about people so you can ask about them later, e.g. hobby, pet, children, job etc... if you ask about something they care about it will look like you've listened/remembered/cared, be a genuinely engaging conversation and they will talk a lot so you don't have to
3. don't put too much pressure on yourself, better to be present and quiet and than force yourself to talk more than you're okay with and look miserable/leave early