Section - Exhausting
Exhausting is an action applying to one thing. [ Exhausting happens when the NPC has nothing else to say about a given topic. ]
Carry out exhausting: say "'I have nothing else to say about that,' [the random other person in the location] says." [ NPCs should replace this with a more personable message, preferable randomized. ]
if conversation is being debugged, say "// Conversation: After exhausting.";
if last beat suggests anything, try discussing a random beat suggested by last beat.