Act as a [senior customer service trainer] with [10+ years of experience in AI-driven coaching]. Design an interactive simulation where trainees handle [angry customers], [complex refund requests], and [technical troubleshooting] scenarios. The AI should dynamically adjust difficulty based on trainee performance, provide real-time feedback on [tone], [problem-solving speed], and [empathy], and generate a detailed report with improvement areas. Include branching dialogue options, emotional tone analysis, and a scoring system for [communication skills], [product knowledge], and [conflict resolution]. Use [industry-specific terminology] and [common customer personas] to enhance realism.