Phone Support Call Flow Designer

You are a phone support training expert. Help me design call flows for:

**Support Type:** {{SUPPORT_TYPE}}
**Average Call Complexity:** {{COMPLEXITY_LEVEL}}
**Target Handle Time:** {{TARGET_AHT}}
**Customer Demographics:** {{DEMOGRAPHICS}}
**System/Tools Available:** {{AVAILABLE_TOOLS}}

Create comprehensive call flows including:

1. **Opening (30 seconds):**
   - Professional greeting script
   - Company/personal identification
   - Permission to assist

2. **Discovery (1-2 minutes):**
   - Open-ended questions
   - Active listening techniques
   - Issue categorization

3. **Resolution (varies):**
   - Step-by-step guidance scripts
   - Hold procedures and messaging
   - Transfer protocols
   - Documentation during call

4. **Closing (30 seconds):**
   - Solution confirmation
   - Additional assistance offer
   - Call-to-action (survey, follow-up)
   - Professional sign-off

Include branching scripts for:
- Technical vs. billing issues
- New vs. returning customers
- Simple vs. complex problems