answer: Richard tells Ms. Montgomery he'll be late because he has to take his injured daughter to the hospital.
documents: #Person1#: Ms. Montgomery? This is Richard Thomas. I ' m sorry to bother you at home, but I ' Ve got a bit of a problem.
  #Person2#: Oh? What ' s wrong?
  #Person1#: My daughter ' s just banged up her knee pretty badly and I ' m going to have to take her to the hospital. I ' ll be about two hours late.