Which example has an incorrect shift in mood?

Responses We should go to a movie, but we should have dinner first. We should go to a movie, but we should have dinner first. - no response given We are going to the store, or we might get coffee. We are going to the store, or we might get coffee. - no response given Do you want to go to bed? Do you want to go to bed? - no response given We might enjoy the book, but we might not. We might enjoy the book, but we might not. - no response given

We are going to the store, or we might get coffee.