NPC quests, no dialogue?

[Lyta]

Hi, is there some game mechanic i dont know anything about concerning NPC quests, on some npcs i can just type in the words in [] from their dialogue and they respond, but on others nothing happens, i have no idea why.

Does your faction standing or like your level or class/race play any part?

[PatChapp]

Level doesn't matter for any quest,just your faction.
Some npc you need to almost be standing on top of them to get a response. Some quests particularly low level poor reward stuff just doesnt work. If you find one,you can report it on the petition bug forum

[Mortdecai99]

Level doesn't matter for any quest

Wrong. Many quests are level gated. For example, the rogue epic. Stanos won't talk to a weakling.