So I leased a new dash out, scheduled all of its flights, 3 day delay, logged off.
On the day that the dash was flying for the first time. I saw that I had 2 unread messages, I thought that these were from other users so I thought nothing of it, and logged off.
2 Days later, I logged on and saw that I had 12 messages! so I checked my mail, and it turns out...
I forgot to book the transfer flight, so the flights ( all 100% load) had been cancelled.