Even though my kid can only say a few words, (mostly variations of "dad," "da-da," and "daddy"), me and her a conversation today for the first time.
I said to her "Hi Pikachu!" (me and my wife call her Pikachu a lot - in fact she seems to respond to that name more than her real name).
And she responded to me with "Hi da-da!"
Earlier today her and my wife both called out "Dad!" over and over to get me out of bed. My wife would yell "Dad!," and then my daughter would yell out "Dad!" It was so cute.