Can you draw Data Flow Diagram ( as much as level required for your project) for Traffic Monitoring?

Can you do it in flow as follows? for examples, box to box, line like 1, 2 on top

D Customer details 1 Customer Customer details Account details Open Account CS Assistant 2 Tranaction history Transaction history Check Transaction 3 D Updated account balance Deposit amount Account Deposite Cash Customer Updated account balance Withdrawn amount Withdraw Cash D Transaction Transaction details 5 Order details Place Order > Stock Exchange Center Order details Broker Transaction details