Dealing with gameobjects in dialog driven game

I'm looking to make a very simple, dialog-heavy game. There is no combat or leveling up or anything like that. The entire thing would consist of:

-walk up to NPC1
-click or press button to start conversation
-conversation initiates fetch quest
-go talk to NPC2 or find some object or walk into trigger collider or click on something etc, triggers event/furthers quest
-warp between a couple different maps
-repeat

I've been messing around with the trial version of Dialog System for Unity and it's great but can someone point me towards some tutorials on dealing with the gameobjects in a basic, dialog driven game? I don't have the mind for coding, my hope is to grasp just enough to do these few specific tasks. Thx for any guidance