A worst service I have gone through ever with recently. We had mistakenly booked our flight on wrong date which we instantly noticed and brought to the knowledge of Sasta .PK to reschedule it. Instead facilitation the Sasta.com charged us for revised booking and kept our amount with them and asked to get adjust with same passenger and same airline. This was worst ever customer service I experienced. They wasted our time and money and was bent upon to not reimburse the payment to use with them howeverway. There are Agoda and booking .com like services which facilitate their customers. I would say it is more ghatia.com instead Sasta. I would never recommend anyone . Instead we may book our flights from any travel agents due to their outdated and lengthy process.