[nmstoker]

Can't say I've missed emotions in Google Search or Excel. In chat from something designed to help you, there's a fairly narrow range of emotional cases that are relevant and useful:

- Confidence/confusion: if the bot thinks it misheard or cannot understand you or it lacks confidence in the ability to reliably respond then it's a handy channel

- Dangerous/Seriousness: an update for something genuinely serious, with major negative implications or costs

Most others are fairly annoying (would anyone want a bot to surface frustration or obsequiousness or being overly agreeable / "bubbly" as here?!)