Yeah, sadly the AI will assume that, if you look for food or water, you will automatically want to eat or drink it. What I have found to help is to specify in the game text prompt that the AI cannot take actions for the player. If the player wants to find water, then the player will ONLY find water and do nothing else until specified further. Without fixing it too hard (so that the AI does allow some new events, like entities, to stroll in), you could add something like this to your game prompt:
The response can't assume or take any actions in behalf of the player.