This youtube is 14 mins long with the first 7 mins about set-up and the last actual examination and cross. Obviously one can reverse the role and have the chatbot be the lawyer doing the examination and cross with the user as the witness.
The only problem is that if you want to try this out you will need to register and get your own account as the platform resets each time. Again this is just a trial to show proof of concept. https://character.ai/chat/vncC2P0zLiDrUx6c24fmcI2bWY0e6HEJmbj0uR9P7gc