text: John: We're leaving for the party now, are you ready?
  Peter: sure
  Maria: almost, when will you be here?
  John: I'll pick up Peter first, so I need about 15-20m min to get to your place
  Maria: ok, that's perfect
  John: Maybe we should get some wine and flowers for Anne
  John: that would be nice
  Maria: we can get them together
  John: ok!
target: John is leaving for Anna's party. He'll pick up Peter and then after 15-20 minutes Maria. They will get some flowers and wine.