For smooth demand they are using reservation or appoinment with the clients for thediagnosis and repairing specific problems. Then, the mechanic will take a short test drivewith the client to be certain the area of problem. After that the service manager will estimatethe repair cost and issue any unexpected provlems that may occur. Overall, there is a directcommunication between client and service managers or mechanic which makes the clientparticipate during repairing process