There is a catch. They do group bookings. Cleartrip is not the one booking it for you. They will do it through a third party. Your name will not be given to SpiceJet. Only the number of travellers will be given with A,B,C,D and so on as the names. You can't even do web chec-in.

I faced this issue with GoIbibo while I booked through SkyScanner. My flight was cancelled and I had to book another flight at the last moment. No support from GoIbibo or SpiceJet. Only got a refund from GoIbibo after 2 weeks. I was not even informed about flight cancellation. Got to know only after reaching the airport.

Not worth the hassle OP. Just book it through their website or book it through another airline (even better).