Another reader indicated that the PassengerManifest view was not listed in Professional DevExpress ASP.NET Controls. It should be in the TotalFlight database, but in the event that someone else needs this view here is a script that creates that view:
CREATE VIEW [dbo].[PassengerManifest]
AS
SELECT dbo.Flight.FlightNumber, dbo.Person.LastName, dbo.Person.FirstName, dbo.Person.Title, dbo.LegManifest.Seat
FROM dbo.LegManifest INNER JOIN
dbo.Person ON dbo.LegManifest.PersonID = dbo.Person.PersonID INNER JOIN
dbo.Leg ON dbo.LegManifest.LegID = dbo.Leg.LegID INNER JOIN
dbo.Flight ON dbo.Leg.FlightID = dbo.Flight.FlightID
GO