Okay, I encountered a rather annoying feature of the game. I've finished the two initial missions
I saved the Ag Center and failed to save Highpool so it was a burning ruin when I finally got there
and headed off to a third area, which seemed to be "skipping ahead" in terms of narrative structure. So I turned back and went to Rail Nomad Camp after visiting the citadel. Now here comes the annoying part: So far, I have had 0 luck typing keywords manually in conversations. Even the obvious ones seemed to not be registered. So I basically wrote using the text input in dialogues off as unnecessary but apparently, resolving the conflict at the Rail Nomad Camp optimally require you use the text parser, even if the game hasn't used it at all up to that point.