After user sets booking details and applies changes, the undergoing validation is performed but the result of validation is not checked before redirecting to confirmation page

Existing navigation code:

<page view-id="/book.xhtml" >

 <navigation from-action="#{hotelBooking.setBookingDetails}">
 <redirect view-id="/confirm.xhtml"/>
 </navigation>
</page>

<page view-id="/book.xhtml" >

 <navigation from-action="#{hotelBooking.setBookingDetails}">
 <rule if="#{hotelBooking.bookingValid}">
 <redirect view-id="/confirm.xhtml"/>
 </rule>
 </navigation>
</page>