Hi all. I'm contemplating purchasing some flight passes from Air Canada, but i'm concerned about ticket availability. The terms of the passes state that they are H booking class tickets. I'm not quite sure if that's good or bad. When I look up flights for today, I see this, but I'm unsure what it means.
Could someone help me understand what I may be getting myself into!

[KVS Availability Tool 3.3.1/Lite - Apollo: ITN/US-ARL]

YYT St John's NL CA [CYYT]
EWR New York Newark Liberty Int'l NJ US [KEWR]
WED 15 Oct 2008

Carrier Flight From Depart To Arrive A/C St Availability
--------- ------ ---- --------- ---- --------- ---- ----
-> AC/QK 8640 YYZ 18:30 EWR 20:00 CRA 0 J4 C4 Z4 Y9 M9 U9 B9 H8 V7 Q7 L5 A0 S0 R9 K8 N7 G7 P5 E0 T0