dialogue: Karen: Guys, I'm taking the bus to Boston at 12.40
  Daniel: Why not a train?
  Karen: They're too expensive and not even faster
  Matthew: True!
  Daniel: What station you're departing from?
  Karen: Penn Station
  Matthew: ok, I'll be there at 12, let's have a fast lunch together
  Karen: ok! 👍
summary: Matthew and Karen will have a quick lunch at the Penn Station at 12.00 before Karen's departure at 12.40. She is going to take a bus to Boston. A bus is cheaper than a train.