You have to wait for it but he says "hello" right at the end f the video. It sounds like "hewro" but he clearly say it when he's talking on the phone. If he hears one of our cell phones ring, he puts his had up to his ear and says hello. If the doorbell rings, he says hello. You knock on the door of his bedroom he says hello.

And at the end, you'll catch a mini-wave bye bye.

Please excuse the video quality and the messy mama.