What are the differences between the various kinds of Airavat buses -LRB- gold class , club class , bliss , and superia -RRB- ?
`` If I book a first class AC ticket from IRCTC , do I get a '' `` coupe -LRB- for 2 people -RRB- '' '' or a '' `` cabin -LRB- for 4 people -RRB- '' '' ? ''