I think this is a good place to ask because I haven't found an answer so far:
Suppose I wanted to find flight between Toronto and London Heathrow
on BA in T or W class OR on AC in C or S class. How would I enter it?
I have tried YYZ:: BA / f bc = W?| bc = T?, AC / f bc = C?| bc = S?
but it hasn't worked. Can anyone help?
Thanks,