If you have created one or more favourite trips, you can create and book a new trip based on one of those favourites.
To do so, click the My Trips tab and click Favourites in the trip menu at the top right.
Click the name of the trip you want to use (or click its Book the same itinerary link) to display the trip details:
Click Reserve a new trip from this favorite to display the screen to enter the dates of your trip:
Set the new departure and (if applicable) return dates, then be sure to click the > update the dates below link on the right.
Verify that the dates have been updated on the screen, then click Check Availability and Prices.
Doing so displays the My Selection tab, where you can add further services as required and perform other tasks - see Viewing Your Selections.
When you are ready, click the Reserve button to display the Reserve screen and continue from Checking the Reservation Details.