answer: #Person1# is late because #Person1#'s car broke down after #Person1# left home. #Person1# didn't call #Person2# because #Person1# forgot the name of the restaurant.
documents: #Person1#: I'm terribly sorry. I'm late.
  #Person2#: I've only been waiting for over an hour, that's all.
  #Person1#: Yes, I know, I... I tried to get here in time, but just after I left home, the car broke down.
  #Person2#: The car broke down?
  #Person1#: Yes, and.., well.., luckily.., there was a garage near me, and.., and it took them a while to repair it.
  #Person2#: Why didn't you at least phone?
  #Person1#: I would have! But I didn't know the number of the restaurant.
  #Person2#: You could have looked it up in the telephone book!
  #Person1#: Yes, but... You'll never believe this... I couldn't remember the name of the restaurant. I knew where it was, but forgot the name.
  #Person2#: I see, well, it was lucky you find a garage to repair your car.