Outbound:
Aug 30 YYC-EWR AC584 12:55-19:24
Stopover in New York
Sep 2 JFK-IST TK4 12:50-05:40+1
Sep 3 IST-BUD TK1035 08:50-09:50
You also need to find the return, and then call in to book all together. You can also have another additional stopover anywhere along your route, e.g. IST, or on the return.