•Book by August 1, 2011 11:59, from your city of departure. q t. f0 O7 j# J) q1 V" b•Valid for travel between July 27 and October 31, 2011 , E# h6 M/ g7 q$ d( A& q具体内容自己看吧- D8 b. V, E- l6 S http://www.aircanada.com/en/offe ... t/asiadiscount.html