answer: #Person1# was late to work. #Person2# asks #Person1# not to do it again and will explain the diagram again.
documents: #Person1#: I am sorry I am so late to work.
  #Person2#: What was the problem?
  #Person1#: I lost track of time.
  #Person2#: Things happen ; make sure it doesn't become a habit.
  #Person1#: OK, it won't happen again.
  #Person2#: All right, please take this message and call this client.
  #Person1#: OK, no problem.
  #Person2#: Now does everyone understand the diagram on the board?
  #Person1#: Yes, I understand the numbers.
  #Person2#: I will explain it again ; especially for those of you who arrived late.