## OUTPUT FORMAT
Wrap your CSV output between the markers ---CSV_START--- and ---CSV_END--- exactly as shown below.

---CSV_START---
(CSV rows here, one per line, no header row)
---CSV_END---

Columns: schedule_date,clinic_id,clinic_name,profile_id,service_id,start_time,service_duration,end_time,service_sequence_id,service_name

Rules:
- Keep schedule_date, clinic_id, clinic_name, profile_id, service_id, service_duration, service_sequence_id, service_name UNCHANGED from input
- Assign NEW start_time and end_time values (HH:MM:SS format)
- end_time = start_time + (service_duration * 15 minutes)
- For UNASSIGNED profiles: set start_time="00:00:00" and end_time="00:00:00"
- Output ALL rows (assigned + unassigned)

After ---CSV_END---, add a section "---JUSTIFICATION---" then for each profile explain briefly:
- What time was assigned and why
- Which constraints were checked
- If unassigned, explain which specific constraint made it impossible