/**
  * Add a hall service according to the details
  * provided in the Request.
  *
  * @param Request $request
  */
 public function addHallService(Request $request)
 {
     $message = "This Service already exists.";
     $data = $request->all();
     // Checks if any services with this name already exist
     $hallService = Hall_Services::where('name', trim($request->input('name')))->first();
     // if no service exists, then create
     if ($hallService == null) {
         Hall_Services::create(['name' => $data['name'], 'rate' => $data['rate']]);
     } else {
         abort(403, $message);
     }
 }