For Clinic Should be consistent with DFD fragments and internally consistent at all levels. (I.e. context, level 0 and level 1).
Context Diagram for your (Finance) sub system Diagram 0 for your (Finance)sub system 2 Level 1 Diagrams Help me, please. 
Type External Event Customer want to pay for the clinic fee Arrival and departure of patients External Temp Time to generate monthly reports Staff's income monthly Internal Trigger Source Use Case Response Destination Check out Customer Check out Check the agreement Customer request Clinic fee When having The Updating System will be Carrie clinic a new patient Finance the automatically update come into the patient's by receiving clinic and the situation information from the old was finance subsystem. discharged End of month Manager, Generate Data is collected then it Management, reports Finance monthly is reported by staff. other staff reports When the The Check System will Staff at staff is on Finance staff's automatically give Carrie's Clinic payday information salaries and bonuses based on job for the month End of month The Check Calculate your The Finance staff's employee's total Government income monthly earnings - add monthly any allowances and irregular payments that are to be included in this month's pay to the normal monthly earnings, ignoring any cents. Supply parts Manager, Receiving Invoice checked and Carrie clinic Finance and make payment checking invoice Monthly Tax table Internal External Suppliers send invoice Type External Event Customer want to pay for the clinic fee Arrival and departure of patients External Temp Time to generate monthly reports Staff's income monthly Internal Trigger Source Use Case Response Destination Check out Customer Check out Check the agreement Customer request Clinic fee When having The Updating System will be Carrie clinic a new patient Finance the automatically update come into the patient's by receiving clinic and the situation information from the old was finance subsystem. discharged End of month Manager, Generate Data is collected then it Management, reports Finance monthly is reported by staff. other staff reports When the The Check System will Staff at staff is on Finance staff's automatically give Carrie's Clinic payday information salaries and bonuses based on job for the month End of month The Check Calculate your The Finance staff's employee's total Government income monthly earnings - add monthly any allowances and irregular payments that are to be included in this month's pay to the normal monthly earnings, ignoring any cents. Supply parts Manager, Receiving Invoice checked and Carrie clinic Finance and make payment checking invoice Monthly Tax table Internal External Suppliers send invoice
