text: Grace: Will u be @ zumba 2day?
  Natalie: Sure thing.
  Natalie: Is it @ 5pm?
  Grace: Yup, no changes.
  Grace: I'll bring u the book I borrowed. I finished it last night.
  Natalie: Thanks :)
target: Grace and Natalie are going to zumba today at 5 pm. Grace will bring Natalie's book. She finished it yesterday night.