answer: Johnson feels the bed is uncomfortable, so #Person1# tells him to use the buttons to control the different parts of the bed but not to press the emergency call button.
documents: #Person1#: Morning, Mr. Johnson. Do you need some more medication?
  #Person2#: No, my leg is feeling fine actually. But this bed is really uncomfortable.
  #Person1#: You told me that you'd like to be able to move and control it yourself.
  #Person2#: That's true. But I don't know how to use it. This controller is huge and there are too many buttons.
  #Person1#: Yeah, it can be pretty confusing. See these buttons at the top here. They control the part of the bed near your back. So you can either sit up or lie down.
  #Person2#: OK, but what about these buttons at the bottom?
  #Person1#: Those ones controll the part of the bed by your feet. Why did you try playing around with it?
  #Person2#: OK, whoa, that's nice. This is much better. But what does this big red button in the middle do?
  #Person1#: That is the emergency call button. Please don't press it unless it's a real emergency.