Hi,
just a quick update on my side, yesterday night I managed to have the quest back-end system working. It properly assigns the quest to the NPC and the NPC answers when you use the right trigger. We are still missing all the client side (chat bubbles / choices) which will follow later on.
In the screen shot below you see the demo quest script on the right, this is the one who sits server side in the database, and you see the first trigger is "goldore". In Unreal i'm chatting with the dermorian, and saying to her "goldore". You see in the chat window she answers properly based on the quest.