label start:
 screen "What would you like to know?"
  responses "Where am I?":where, "Who are you?":who, "Nothing.":end

label where
 if @askedBobWhere:alreadyWhere
 else:notYetWhere

label alreadywhere
 screen "I already told you where you are. You're sitting at your computer."
  responses "Oh, okay.":end

label notYetWhere
 screen "You're sitting at your computer, silly."
  responses "I see.":start

label who
 screen "Who am I? Why, I'm Bob!"
  responses "Nice to meet you, Bob.":start

label end:
 end