I have bought three tickets for an agency that I recommend on the KAYAK page called STUDENTS UNIVERSE, it would be excellent if as a company it had a filter of the agencies that it recommends to its clients to buy tickets.This agency has lousy customer service. For canceling the ticket they charged me $450 per person and I paid for insurance that they did not return it either, the reason was visa denial, it was not because we did not want to travel.