A single morning departure to AMS may be feasible in future. The Dublin route is proving relatively popular in particular at weekends.. an Amsterdam route may prove equally so for weekend breaks from Carlisle. Add in the possibility of onward connections to elsewhere in Europe and even the US, and you may have enough to sustain a single daily flight.
However, as others have mentioned previously, Amsterdam is currently near to capacity, so theres little chance of a new route to the regions for now.