Convert Input to Request facade

Laravel 5.2 no longer registers the `Input` facade by default. While
still available in Laravel 5, the `Input` facade is removed in
Laravel 6.

app/Http/Controllers/Agent/helpdesk/OrganizationController.php

@@ -3,6 +3,7 @@
 namespace App\Http\Controllers\Agent\helpdesk;
 
 // controllers
+use Illuminate\Support\Facades\Request as Input;
 use App\Http\Controllers\Controller;
 // requests
 use App\Http\Requests\helpdesk\OrganizationRequest;
@@ -264,7 +265,7 @@ class OrganizationController extends Controller
     public function Head_Org($id)
     {
         // get the user to make organization head
-        $head_user = \Input::get('user');
+        $head_user = Input::get('user');
         // get an instance of the selected organization
         $org_head = Organization::where('id', '=', $id)->first();
         $org_head->head = $head_user;

app/Http/Controllers/Agent/helpdesk/TicketController.php

@@ -45,7 +45,7 @@ use Hash;
 use Illuminate\Http\Request;
 use Illuminate\support\Collection;
 use Illuminate\Support\Str;
-use Input;
+use Illuminate\Support\Facades\Request as Input;
 use Lang;
 use Mail;
 use PDF;
@@ -1588,7 +1588,7 @@ class TicketController extends Controller
      */
     public function autosearch($id)
     {
-        $term = \Input::get('term');
+        $term = Input::get('term');
         $user = \App\User::where('email', 'LIKE', '%'.$term.'%')->pluck('email');
         echo json_encode($user);
     }

app/Http/Controllers/Agent/helpdesk/UserController.php

@@ -39,7 +39,7 @@ use Exception;
 use GeoIP;
 use Hash;
 use Illuminate\Http\Request;
-use Input;
+use Illuminate\Support\Facades\Request as Input;
 use Lang;
 use Redirect;
 
@@ -897,7 +897,7 @@ class UserController extends Controller
         // checking if the name is unique
         $check2 = Organization::where('name', '=', Input::get('name'))->first();
         // if any of the fields is not available then return false
-        if (\Input::get('name') == null) {
+        if (Input::get('name') == null) {
             return 'Name is required';
         } elseif ($check2 != null) {
             return 'Name should be Unique';