answer: Chris calls Allison but Allison's out, so Chris leaves his number and asks #Person2# to tell Allison to call back.
documents: #Person1#: Hello, could I speak to Allison, please?
  #Person2#: I'm sorry ; he's out at the moment.
  #Person1#: When do you expect him back?
  #Person2#: I think he'll be back in about an hour at least.
  #Person1#: Well, may I leave a message?
  #Person2#: Yes, of course.
  #Person1#: Would you please ask him to call Chris when he gets back?
  #Person2#: Ok. Does he know your number?
  #Person1#: I'm afraid he doesn't. My mobile is 139- 2477 - 4026.
  #Person2#: 13924774026. All right. Thanks for calling. Oh, hang on, someone's at the door that may be him, please hold on.