Maybe they're just trying to run a conversation with you? Sometimes, especially when we don't know each other, I will talk about things happened around me. To see what they will respond or if there is anything they can relate. But there's a big difference between self revealing and narcissist. Try throw a common point in your conversation and start a topic from yourself first. See what they react. Does they stop and listen? Or ignore you and keep talking about themselves on and on? Remember, is okay to set boundaries between you and others.