Apparently dialogue is not working on ipad. You can't speak to people at all. Nothing happens when you go up to people. If you press the speak button you get a stock message which says you don't have any party members to speak with but on the iPhone dialogue appears as soon as you go near a character. I'll delete and reinstall. Something not right on ipad. PS : Thanks to help from dhgamer its fixed. The centre button is for dialogue. I bet SE are having a good laugh!