text: Jacob: I'm going tomorrow to the north
  Daniel: Porto?
  Nick: nice, will you visit us?
  Jacob: I'm going to Viana do Castelo, so I will only go through Porto
  Nathan: so you should visit me and my wife in Viana
  Jacob: I'd love to
  Nathan: would you like to come for lunch?
  Jacob: I should arrive around midday, I have some meeting at 3p.m. so lunch would be really nice
  Nathan: great! She will be happy
  Nathan: Just don't be stressed, she doesn't speak English very well
  Jacob: we can speak Portuguese of course
  Nathan: so you speak Portuguese now?
  Jacob: I've had a teacher for the last 10 months, so I can speak a bit already
  Nick: why won't you stop by for a dinner in Porto?
  Nick: you could even stay overnight at our place and come back to Lisbon on Saturday
  Nick: or even stay over the weekend!
  Jacob: Nice idea, but I'll talk to Sara first
  Jacob: she wanted to spend the weekend together
  Nick: so make her come here as well, I know she likes Porto
  Jacob: she does indeed
  Jacob: I'll let you know later
target: Jacob's going to Viana do Castelo. On his way he'll meet Nathan and his wife for lunch. Jacob and his wife learnt to speak Portuguese. Nick wants them to stay for the weekend in Porto. Jacob will ask Sara about this.