Doctor Appointment Mobile Application

scope of project was to create one mobile app where patients can book the doctors as per there requirements.
1. Patients can see the categories of diseases.
2. After selecting the category, Patients can see the doctor’s name and their availability
3. After selecting the time slot patients can see charges for a session.
4. Then patient can select pay the amount and payment options will be shown.
5. Once payment is done appointment confirmation notification is sent to patient.

i need java microservices based solution.