"The times move fast in a city like Silgrad. I suppose much like the thermometer's mercury every time the bloody sun slips just above or below the horizon. You haven't got the lovely humidity of Vvardenfell or west Hammerfell over there, oh no. Not in that cat-infested oven."

(This line should be delivered with disdain - Decentius holds contempt for the city in which he lives and the other races who share it. He's already in an ill-tempered mood, and being asked to talk about Silgrad isn't doing wonders to improve that. Despite this, he's still a man on business, and won't reduce himself to shouting or excessive cursing. )

"I'm not here to chinwag, s'wit. If you shan't help the victim, then you're on the side of the criminal. Leave me, lest I have my men remove you by hand."

(This line is aggressive and barely restrained - Decentius feels insulted and is rapidly losing his patience. He wants the problem - the player - out of his sight ASAP, preferably before he suffers an enraged outburst. When mentioning his men removing the player, he should sound serious and threatening.) 

"You're reliable, and that's a very positive quality. I mean that. I apologise for giving you so much trouble at the onset, but you can understand how frustrating my position was. But now, thanks to you, justice has been served, and that filthy fetcher can't be a menace to society any longer. As promised, three-score drakes to line your pockets - and there'll be plenty more than just coin to reward you once we work out where he stashed my property."

(In this line, the player has aided Decentius in a timely and efficient manner, showing him they're a positive asset. He feels remorse for how he was outwardly cold upon their first meeting, and now sees them as a friendly acquaintance who he would like continued aid from.  Nonetheless, he still maintains a tone of being official and in-control, being a businessman above all else.)