You don't remember? It's the system you coded for interactions, when a character with set_flag("event_to_interactions_flag_name", value={"label": "...", "button_name": "...", "condition": "True"}) will have a unique option in dialogue which will be called button_name and will jump to label.
It doesn't matter though. The problem is, normally we create interactions via gm.start("girl_interactions", chars[char], chars[char].get_vnsprite(), place, background), and after they are over, we return to place. Jumping to label girl_interactions_end will return you to place too.
However, I wonder if it's possible to return to some other location.