Is there a best practice with tagging when writing dialogue? By that I mean the use of "he says, she says" e.g. "How are you?" I say. "I'm fine, and you?" she says. "I'm fine too." (no tag here) "Yeah, well then how's the weather?" (no tag here) "It's sunny." I say. (here tag is used again.) Or is it just up to the writer?