There are two applications one for the user and other for the vendor
User can book a service which can be plumbing , AC repairing ,Electrical Work etc at their convenient time.
They can also call the vendor for which we have integrated Sinch api.
Vendor can accept the request from the user.User can book slots of 30 mins each.Vendor would be able to see user location on maps.
Once vendor has done his job and if user thinks that it still needs some changes then user can reschedule the job.