Sonia emphasizes the importance of replacing language, graphics, and links in chatbots to create a more real experience for users when transitioning to voice interfaces. She also highlights the need for confirmations to prevent misunderstandings and misinterpretation of user requests. Additionally, Sonia stresses the value of asking for more details to provide a better user experience, accounting for communication lapses in time, stockpiling utterances to accommodate variation in user speech, and adding a variety of error messages to make the interaction feel less robotic. These adjustments can significantly enhance the effectiveness and user-friendliness of voice-based chatbots.