dialogue: #Person1#: I came to this lab to have my blood drawn. 
  #Person2#: You are in the right place. Roll up your left sleeve and have a seat. 
  #Person1#: What am I being tested for? 
  #Person2#: Your doctor wants to know what your white blood cell count is. 
  #Person1#: What does my white blood cell count tell him? 
  #Person2#: Usually if your white count is off, the doctor suspects an infection. 
  #Person1#: How much will it hurt? 
  #Person2#: It is only a pin prick. I have to put this tourniquet on your arm to make the vein easier to find. 
  #Person1#: Is that my blood going into that tube? 
  #Person2#: That blood that just filled the tube is all that I needed. Thanks for coming in! 
summary: #Person2# is drawing #Person1#'s blood because the doctor wants to know #Person1#'s white blood cell count.
topic: draw the blood