try to say words near the AI ( villager and princess ) and they will learn it.

i taught to villager:

go away!

how are you?

oh-uh

i taught to princess:

lol

i will heal you

i am fine

my name is anna.

i love you <---- this is XD but it really work! https://i.redditmedia.com/gNVnAj9JR57wZ-wx86kOAM-WcMn3HszwY1JLa4UH5Hg.png?w=1024&s=02e1c4fe63c1e7cb4ce84db944369a6b