Originally Posted by
azstar
I'm not sure, but according to cwsi.net and other websites, Z class is not First Class.
Description:
"Heavily discounted Business Class - CANNOT (officially) be upgraded using either miles or SWU's or Sales Dept upgrade certificates."
It's possible you were confirmed in coach and waitlisted in F on the SFO-IAH portion.
Maybe there was no F cabin SFO-IAH.
This was confirmed first class, not an x-up fare, and I had seat assignments. In fact, I am on the flight now, and sitting in a middle seat in economy, using WIFI, and SHARES shows me in 2A.