a round-trip ticket from Busan to Jeju, 4/16~4/18, 5 adults and 1 child/ depart in Busan(morning), depart in Jeju(afternoon) I searched this conditions by the app. The app displayed many costs from 180000 won, saying these are cheapest costs. So I pressed a reservation button but it didn't work. Then I pressed all buttons below in sequence. Only all link which was connected to Y company didn't work. I called Y company. They said "there is no remained ticket for what the app is displaying now" and moreover they also said "you should ask to S tour company because it is problem of linking internet sites" Why do you deceive me? Why did you let 'false tickets worth of 180000 won' repeatedly be displayed and disappear everynight for 3 days although you had no one ticket? Are you kidding with me?