This will return the original fare you selected, unless they are sold out in that fare class (then it will let you know it is not available and you can try a different date/time).

Closest thing we have to fare class booking. It used to be better as they used to list the names of the fares in the fare listing. Now you have to manually click on each one to find out if it is L Q V etc and then look at each one to find more detailed restrictions. They should give the fare name.