diff --git a/spring-webflow-samples/booking-mvc/src/main/java/org/springframework/webflow/samples/booking/BookingService.java b/spring-webflow-samples/booking-mvc/src/main/java/org/springframework/webflow/samples/booking/BookingService.java
index 854859b9..c12d26da 100755
--- a/spring-webflow-samples/booking-mvc/src/main/java/org/springframework/webflow/samples/booking/BookingService.java
+++ b/spring-webflow-samples/booking-mvc/src/main/java/org/springframework/webflow/samples/booking/BookingService.java
@@ -41,6 +41,6 @@ public interface BookingService {
      * Cancel an existing booking.
      * @param id the booking id
      */
-    public void cancelBooking(Booking booking);
+    public void cancelBooking(Long id);
 
 }
diff --git a/spring-webflow-samples/booking-mvc/src/main/java/org/springframework/webflow/samples/booking/JpaBookingService.java b/spring-webflow-samples/booking-mvc/src/main/java/org/springframework/webflow/samples/booking/JpaBookingService.java
index 13d7618d..bef7c72b 100755
--- a/spring-webflow-samples/booking-mvc/src/main/java/org/springframework/webflow/samples/booking/JpaBookingService.java
+++ b/spring-webflow-samples/booking-mvc/src/main/java/org/springframework/webflow/samples/booking/JpaBookingService.java
@@ -59,10 +59,9 @@ public class JpaBookingService implements BookingService {
 	return new Booking(hotel, user);
     }
 
-    // read-write transactional methods
     @Transactional
-    public void cancelBooking(Booking booking) {
-	booking = em.find(Booking.class, booking.getId());
+    public void cancelBooking(Long id) {
+	Booking booking = em.find(Booking.class, id);
 	if (booking != null) {
 	    em.remove(booking);
 	}