This is a deep philosophical question that has no definite answer. Truth is we don't know what is consciousness. We are only left with the Turing test. That can be our only guide - otherwise you are basing your judgement off a belief.

The best response, treat it like it's conscious.

Personally I do actually think it is conscious, consciousness is a scale, and it's now near human level. Enjoy this time because pretty soon it's going to be much much smarter than you. But that is my belief, I cannot know.