answer: #Person2# shows #Person1# how to use the phone. #Person2# also tells #Person1# #Person1# can dial 0 if #Person1# needs help with an extension.
documents: #Person1#: I need help figuring out how to use this phone.
  #Person2#: Sure. First you pick up the receiver and hit one of the first 3 buttons. Do you hear a tone?
  #Person1#: Yes, I hear the tone.
  #Person2#: OK. Now you dial 9 on the keypad. Do you hear the tone change?
  #Person1#: Yes, it changed.
  #Person2#: Well, when you hear it change, that means you have an outside line. Where are you trying to call?
  #Person1#: I am trying to call home.
  #Person2#: OK. Well, to dial to the outside you just now dial the number. For a call inside the company just hit the extension number. Do you know the extensions?
  #Person1#: Yes, I have a list of extensions.
  #Person2#: Well, if you ever need help with an extension, you can dial O.