Disclaimer: I am a late-bloomer socially, but I do generally like talking with people when not under attack from weird forms of social anxiety.

Something along the lines of acknowledging what they said first would help. I.e, “Oh cool, you went to Paris!“

Then, ask follow-up questions: “I’ve heard there’s great food in France. What was a favorite meal there?”

Acknowledge again: “A simple croissant at the Louvre? Sounds lovely.”

Question more if you’d like: “Did you get to do everything you hoped for?”

Acknowledging again: “Ah, Notre Dame was still under construction from the fire. I heard about that, what a shame.”

Tbh you can do this for as long as you’d like. It gets easier the more you do it. Of course there is the chance of coming off as a interviewer, which is why acknowledging what they said and sympathizing (meal at the Lourve = lovely, missed out on Notre Dame = a shame) are important. But people like talking about themselves generally, so it’s easier than you’d think.

It’s possible to hold an entire conversation without talking about oneself. And there’s nothing wrong with that. Leaving them to want more is ok! Wanting to connect is a human trait, it’s an honor to be the witness to someone else’s sharing. Your time to share will come, and with practice you might find that if they never ask you a direct question themselves, you can decide how much energy to give then. Does that make sense?