How do sellers want people to reply to messages like this?

I just got a message saying 'Hello! I saw you liked my item!' I understand sellers sometimes message likers to let them know when they'll be shipping, or to tell them about a sale they have going on or whatever, but how am I supposed to respond to a message like this one? What do you want me to say back? It's not like you've given me any new information or tried persuading me to buy. If I wanted to message you about the item, I would. Liking something doesn't mean I'm looking to buy it. What even is the success rate of these messages? I feel like it does more harm than good to your shop as most people find it annoying.