UserUserScheduling ClientScheduling ClientScheduling PlatformScheduling PlatformScheduling Server 1Scheduling Server 1Scheduling Server 2Scheduling Server 2Open clientGet available HealthcareServicesGet available HealthcareServicesGet available HealthcareServicesAvailable HealthcareServicesAvailable HealthcareServicesAvailable HealthcareServicesSelect HealthcareServiceGet available SchedulesGet available SchedulesGet available SchedulesAvailable SchedulesAvailable SchedulesGet available SlotsGet available SlotsAvailable SlotsAvailable SlotsAvailable SlotsSelect slotopt[holding appointment]Reserve slotReserve slotReserve slot responseReserve slot responseopt[Patient does not exist]Enter detailsCreate PatientCreate Patient responseBook appointmentBook appointmentBook appointment responseBook appointment responseConfirm appointment booking