So I've tried a few variations on ticket searches. Pain language great. Two fliers great, can specify times and stops.
Trans continental with connections, works - specifying destinations and round trips
Worked great too.
Local flight in Western Canada, came up with options, but very expensive, and in USD.
I don't use Google for flights - but your tool provides a very efficient way of communicating to google, to get what you want.
One thing I noticed so far, that Google prefers Lufthansa over KLM on search results.
Anyway, great work. Keep us informed!