Beside strategies there is a number of commands can be used to interact with bots in some way. This is usually used to get some information about the bot (i.e. quest status, items, etc.). Bot can provide some information if you whisper them a item, quest or game object link (i.e. quest status, item usefulness, etc.)
statsBot will reply about their gold, experience, bag space, equipped items repair cost.
questsBot will reply with their quest summary divided by status (completed/incompleted). Can be enhanced by whispering quests all - full quest report, quests completed - only quests that can be turned in, quests incompleted - only incompleted quests, quests summary - same as quests
q [quest]Bot will tell specified quest status with progress by objectives
drop [quest]Bot will drop the specified quest
accept [quest]Bot will accept the specified quest from the selected quest giver (quest link can be replaced with * so bot will accept all available quests)
If you pick a quest when bot is in range, he will pick the quest as well. When you turn-in the quest, bot will turn-in it as well (of course if it is completed). You can share any shareable quest with the bot - it will accept it if allowed by the game.
When turning in a quest with reward selection bot will not select reward by himself. You need to whisper them
r [item]where [item] is reward item link