on the scheduling screen any flights without slots show up as yellow.
If I hover over the route a box comes up with "close route" "edit route" etc. I'd like this box to also include an option "buy slots $342,101" or "buy slots (red X)" where I could click on the option and buy the slots there and then for the price stated, or realise one of the slots is not available and I'll need to edit the route if the red X is displayed.
Perhaps also there could be a radio button on the schedule screen, where the "show planes with no routes" radio button is, to
"show planes without slots"
Simon