A follow-up message can be short and sound like you. Mention something you talked about, then make a simple invitation if you would like to see the person again.
Try a message that feels natural
“I enjoyed hearing about your garden. Would you like to visit a plant shop together sometime?”
“I had fun talking with you at the event. Want to go to another one together?”
“Thanks for recommending that book. I am going to look for it this week. What else have you been reading?”
Edit the examples, or use your own words. You do not have to send a message within a certain number of hours. Reach out when it feels right to you.
Make the invitation easy to answer
Suggest a plan that is simple and specific enough to respond to. Leave room for the other person to decline or suggest a different time. If they do not reply, give them space.
A message can help you reconnect, but it cannot promise that you will become friends. The other person gets to decide whether they want to continue the conversation, too.
For more ideas about reconnecting after an event, read how to stay in touch after a conversation you enjoyed. If you forgot to exchange contact details, see what to do next.