dialogue: Daniel: I'm packing for the trip, are you done with it?
  Michael: Mostly done, don't forget your passport!
  Matt: is an ID not enough?
  Michael: sure not!
  Brian: why?
  Michael: Bosnia and Herzegovina is not in the EU, so we will have a proper border control
  Michael: no passport, no entry
  Daniel: good you wrote us this I think :P
  Matt: yes, we're morons 
  Daniel: haha, yes, a bit
  Brian: I didn't even know we're going to enter Bosnia, I though we're going to stay in Croatia only
  Michael: we planned to go to Mostar and the mountains, so Bosnia it is
  Brian: anyway, I'll pack my passport
  Michael: very good
summary: Daniel, Michael, Matt and Brian are going to Croatia and Bosnia and Herzegovina. They are packing. Michael reminds them to take their passports, because Bosnia and Herzegovina is not in the EU. They will go to Mostar and the mountains in Bosnia.