override protected void OnNavigatedTo(NavigationEventArgs e)
        {
            if (isCustomer)
            {
                // if we have a customer we need to load a bunch of info
                var db   = new AirContext();
                var user = db.Users.Include(dbuser => dbuser.CustInfo)
                           .ThenInclude(custInfo => custInfo.Trips)
                           .ThenInclude(trip => trip.Origin)
                           .Include(user => user.CustInfo)
                           .ThenInclude(custInfo => custInfo.Trips)
                           .ThenInclude(trip => trip.Destination)
                           .Include(user => user.CustInfo)
                           .ThenInclude(custInfo => custInfo.Trips)
                           .ThenInclude(trip => trip.Tickets)
                           .ThenInclude(ticket => ticket.Flight)
                           .ThenInclude(scheduledFlight => scheduledFlight.Flight)
                           .ThenInclude(flight => flight.Origin)
                           .Include(user => user.CustInfo)
                           .ThenInclude(custInfo => custInfo.Trips)
                           .ThenInclude(trip => trip.Tickets)
                           .ThenInclude(ticket => ticket.Flight)
                           .ThenInclude(scheduledFlight => scheduledFlight.Flight)
                           .ThenInclude(flight => flight.Destination)
                           .Single(dbuser => dbuser.UserId == UserSession.userId);
                CustomerInfo customerInfo = user.CustInfo;
                // award points for any trips that have departed & were not yet claimed
                int newPoints = 0;
                // loop through all of their trips
                foreach (Trip trip in customerInfo.Trips)
                {
                    // check if the trip has departed
                    if (trip.GetFormattedDeparted() == "Trip has departed!")
                    {
                        // make sure they haven't claimed the points already
                        if (!trip.PointsClaimed)
                        {
                            // Award the appropriate points to the user
                            UserUtilities.AwardPoints(user, (trip.TotalCost / 100) * 10);
                            newPoints          = trip.TotalCost / 100; // keep track of this for the ui
                            trip.PointsClaimed = true;                 // set the points claimed to true
                            var dbtrip = db.Trips.Single(dbtripinterior => dbtripinterior.TripId == trip.TripId);
                            dbtrip.PointsClaimed = true;               // and update the db as well
                            db.SaveChanges();
                        }
                    }
                }

                // Display basic info about the user
                WelcomeText.Text       = $"Welcome back {customerInfo.Name}!";
                PointsText.Text        = $"You currently have {customerInfo.PointsAvailable + newPoints} points available, and overall you have used {customerInfo.PointsUsed} points.";
                CreditText.Text        = $"You currently have a credit balance of ${customerInfo.CreditBalance / 100} with us.";
                TicketSummaryText.Text = $"You have booked {customerInfo.Trips.ToArray().Length} trips with us.";

                // and fill our list view with the customers trips
                TripList.ItemsSource = customerInfo.Trips;
            }
        }