WHO'S ON THE PHONE?

 Just the other day James Watt attempted to call James Brown, to finalize
plans for a construction job he was scheduled to do for Mr. Brown.
 Unfortunately he dialled the number wrong and a man named William Knott
answered.
 "Who's calling?" was the answer to the telephone.
 "Watt."
 "What is your name, please?"
 "Watt's my name."
 "That's what I asked you. What's your name?"
 "That's what I told you. Watt's my name."
 A long pause, and then from Watt, "Is this James Brown?"
 "No, this is Knott."
 "Please tell me your name."
 "Will Knott."
 Whereupon they both hung up.