text: Teresa: where should we meet?
  Alan: at the subway station
  Teresa: which one?
  Alan: Nostrand Av.
  Teresa: Ok, but I need some more time to get there
  Alan: much more?
  Teresa: additional 30min
  Alan: ok, that's not bad
target: Alan will meet Teresa at the subway station Nostrand Av. Alan isn't happy with Teresa being late 30 minutes.