[m-s]

That's incorrect. Emirates operates some aircraft with a two-class configuration.

[kenneth]

Not yet. They will be when they take delivery of new planes and reconfigure their 772LR, but as of right now they only fly 777s and 380s in 3-class configuration. Perhaps you're thinking of Etihad or Qatar or EK's partner flydubai.

https://en.wikipedia.org/wiki/Emirates_fleet