Funcom have implemented into Age of Conan, a feature which is often prevalent in many single-player adventuring games, but rarely in an MMORPG.
An example of branching dialog with Mithrelle
That is Branching Dialog.
Branching Dialog is a way of giving the ability to give different answers to a question to achieve a similar or different end result depending on how you wish to play. But be careful on what you choose to say, as you cannot take back these conversation choices and who knows how it may affect you down the track.