Hello, I'm a noob.

So anyway, there's this bit in a quest I'm trying to make where you talk to this guy and persuade him to give you an item that's on the table between you. I have a couple of questions about how to do this:

-The item ownership is set to the character I speak to. How do I, after a certain dialogue is spoken, change the item ownership to the player?

-How does persuading/lying work in dialogue? How do you create a chance that a person will agree with you, and a chance that they won't? Or are all dialogue possibilities predetermined somehow?

Muchos gracias

1) According to the wiki: http://www.creationkit.com/SetOwnership

SetOwnership BladesFaction (substitute PlayerFaction here I think)
MyObject.SetOwnership (make a property for your object in your fragment)

2) generally set by conditions, speech, perks and quest variables. Sometimes predetermined based on those conditions as well.