Facts: Air Canada has flights all over the world. So does British Airways and Luftansa. These three airlines connect to some of the same cities, but do not always fly to the exact same destinations.

Air Canada would like to have its passengers use the Air Canada booking system to get to where its passengers want to go, but where Air Canada doesn't fly. It sees that

British and Airways and Luftansa do fly to those locations, and connect through cities where Air Canada flights land. Air Canada simply wants to find a way to make use of British Airways and Lufthansa's flight networks.

Questions:

What type of business arrangement would you recommend structuring in this case and why?