dialogue: Paul: Do you have your keys?
  Lena: Yup. What's up?
  Paul: I will be home later than I thought, so just don't wait for me and get home.
  Lena: What happened?
  Paul: I'll call you in 15 minutes and then I'll tell you.
  Lena: Ok.
summary: Lena has her keys. Paul will be home later than he thought. Paul will call Lena in 15 minutes and tell her what happened.