I have been using this app for about 6 months now, i have tried using it to travel for about 6 times, but was successful only once. People keep canceling my reservations. I wish that cancellation mandatorily has a justification. People keeps canceling and now i feel as if it is a personal problem, racism, or personal interest/second interest of driver. Now i have my easter plan jeopardized. I ask that the development team does something about this, a mandatory cancellation justification will be fine.