Hi All, i have an Lufthansa international Z fare, and i was wondering what booking class that becomes when flying CO domestically. i know with United, when im on a Z fare, and only 1st class is offered, im booked in to an A fare, and was wondering if this is the same with CO. ITA is showing Z fares for the domestic segments, even tho there is no biz offered on the flight just 1st.
Funnily enough, it seems to be showing some UA flights as Z class which i know is not right, as its a 320.

thanks