I wonder if this works

ticket one
YYZ - JFK
JFK - somewhere in Forida
somewhere in Forida - JFK

ticket 2
JFK - somewhere in CA
somewhere in CA - JFK
JFK - YYZ

what will be the estimated cost?
does AA fly to HKG (if not, can I still use he free ticket?)?
what is the best place to book a ticket from Canada?
is the free ticket transferable and reversible? (If I want a ticket from Tokyo, can it be orginate from Tokyo instead of US?)

when will this promotion end???

many thanks!!!