diff --git a/backend/app/service/BusinessTripService.php b/backend/app/service/BusinessTripService.php
index 203f6d5..92e6560 100644
--- a/backend/app/service/BusinessTripService.php
+++ b/backend/app/service/BusinessTripService.php
@@ -173,9 +173,9 @@ class BusinessTripService
             $itinerariesData = $businessTrip->itineraries->map(function ($item) {
                 return [
                     'destination' => $item->destination,
-                    'start_date' => $item->start_date,
-                    'end_date' => $item->end_date,
-                    'estimated_cost' => $item->estimated_cost,
+                    'start_date' => $item->start_time,
+                    'end_date' => $item->end_time,
+                    'estimated_cost' => $item->estimated_cost ?? 0,
                 ];
             })->toArray();