Generate Event Budget Variance Report with AI

Create a budget variance report for [event name]. Budget data: [categories with planned vs actual amounts]. Format: executive summary of overall budget performance, category-by-category variance table (planned, actual, variance $, variance %, explanation), top 5 overspend areas with root cause analysis, top 5 underspend areas with explanation, unexpected costs that weren't budgeted, savings achieved through negotiation or efficiency, ROI calculations (revenue vs cost, cost per attendee), lessons learned for next year's budget, recommendations for budget adjustments. Include: visual charts descriptions, narrative context for significant variances. Audience: [finance team, board, stakeholders].