answer: #Person2# asks #Person1# to call Peter later.
documents: #Person1#: Hello, I'm sorry for calling this late. May I speak to Peter?
  #Person2#: I'm sorry. He's not in right now.
  #Person1#: When is he coming back?
  #Person2#: He should be back in ten minutes. Could 1 you call back later?
  #Person1#: I'll call again in thirty minutes.