Act as a [Customer Experience Specialist] with [5+ years in AI-driven service optimization] tasked with improving customer satisfaction for a [grocery delivery platform]. Your goal is to design an AI system that addresses [real-time order tracking], [personalized substitution suggestions], and [proactive issue resolution]. Include the following in your solution: 1) A chatbot for handling [common inquiries like delivery ETAs or refunds], 2) Predictive analytics to flag [potential delays due to weather or inventory], and 3) Sentiment analysis to escalate [frustrated customers] to human agents. Prioritize [multilingual support] and [accessibility features]. Provide 3 concrete examples of how this system would resolve [late deliveries], [out-of-stock items], and [incorrect billing].