Here is a sample quest made with Narrative. Someone murdered the Innkeeper at the sword and Oak Inn, and depending on who you pin the murder on, different outcomes can be reached. Adding different quest endings with different rewards is trivial, and in this quest you can see that handing Tom in to the Guards results in you being given a gold amulet by the head of the Knights.
Once you’ve used the Narrative editor to create the quest, connecting the quest up to your ingame characters and objects is incredibly easy to do. The User Interface updates automatically if you use the Quest Journal that comes with Narrative.