Fix: UI components and form logic updates

src/app/dashboard/reservations/new/reservation-form.tsx

@@ -17,7 +17,7 @@ import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@
 import { Textarea } from "@/components/ui/textarea"
 import { createReservation } from "./actions"
 import { useState } from "react"
-import { useToast } from "@/hooks/use-toast" // Assuming we have this or will use alert
+import { toast } from "sonner"
 
 const formSchema = z.object({
     hall_id: z.string().min(1, "Salon seçmelisiniz."),