How is dialect used to portray the speaker in this excerpt from O. Henry's The Marionettes? "Den fo' God's sake come and see Mister Chandler, suh. He done had a fit or sump'n. He layin' jist like he wuz dead. Miss Amy sont me to git a doctor. Lawd knows whar old Cindy'd a skeared one up from, if you, suh, hadn't come along."