Website let you loose your money

Website change your dates when try to book a flight. Website is not easy and is definitely not user friendly. When you skip a selection and the website call you back to modify it, some of the crucial data change like the dates automaticly If you are not aware of this you will book a flight on a different date without you even notice it This is utterly annoying and since you can't change your flight without cost after your booking you can lose a lot of money.