{"customer_name": "Priya Mehta", "contact_number": "9521173032", "pregnancy_week": "22 weeks", "registration_id": "RCH-DEL-2025-1847", "appointment_date": "13 November", "appointment_time": "10:30 AM", "requested_action": "reschedule appointment", "last_consulted_doctor": "Dr. Rinku Sengupta", "reason_for_rescheduling": "medical concern - bad cramps in back"}