Looks like there is no Flex solution file for Ex9 for CF, just the server-side
code.

As a workaround, you can download the LCDS solution, and make a modification
to make it work with CF Flash Remoting.

Replace ReservationForm.mxml's <mx:RemoteObject> tag with the following:

<mx:RemoteObject id="hs"
source="reservations.ReservationService"
destination="ColdFusion"
fault="faultHandler(event)">
<mx:method name="doCreate" result="resultHandler(event)"/>
</mx:RemoteObject>