1. Now almost all B2C and B2B generally merged, for example booking.com sell to customers, but same time to partners, offering them rewards. It doesn't matter what type of business is arranged, if direct customer (any) can find a lot of cheaper online.
2. Ivan Susanin Co Ltd - run B2C and B2B business, and we have multiple tour operates agents from Russia, Kazakhstan, Ukraine and even some from Israel. Our main work - dynamic travel packaging. We offer few thousands travel services (hotels, transfers, tours, different tickets and medical) which are used to built any type of trip and permit to book one or may services at one time. Real sample see at http://mir.ivan-susanin.com/post157707.html#p157707 (customers share trip details on webboard)
3. So as you understand we are not clear OTA, and our staff can manage DB records only :).