Oh yea I know lots of normal people who while cooking dinner will hold a conversation -

Oh shoot wheres the butter, there it is over there ok now the milk and mash these potatoes. and so on

My own therapist told me she has Dialogues with herself daily and through out the day and that having a dialogue aloud or silent with the personb doing the dialoging is completely normal. What makes it abnormal is if the person is having hallucinations of believing they are talking to some one else and no one is really there or the pserson has other symptoms that go along with that, that point to a physical or mental health disorder.

Dialoging in general aloud and or silent to ones self is completely normal with out other symptoms and behaviours to go along with it.

Talk with your therapist, family physician and other treatment teams if you have any and they will be able to tell you whether or not what you are doing falls into the normal behavior catagory vs a mental or physical disorder such as terrettes, brain tumors interferring with brain activity, schizophrenia, DID, Bipolor and so on.

Hang in there