Add more features to an existing Augmented Reality project

Hello developers, currently I have an AR project developed in Unity, using Vuforia Engine. The core of the project is a virtual agent who can communicate with user. The virtual agent was already developed by another freelance developer. Please see the existing project in this link: [login to view URL] Now, I want to add more features to it including texts display so user knows what to say, and a microphone to record user's voice. I also need the final result to be deployed on Android system. I have created a prototype in 2D. Basically, the 2D character in the prototype is the current virtual agent, and will appear in AR when you scan the marker. Please check the new prototype here: [login to view URL] Basically in the final result, you can scan the marker, talk to the virtual agent and see what you can say with Android phone. Message me if you need more info!