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i have an online bus reservation system in PHP + MySql and i would like to add some new features.
At the moment an user can buy a one-way ticket, so for example, if he wants to go from New York to Boston and then from Boston to New York he has to buy two different tickets. I would like to add the possibility to buy the New York-Boston,Boston -New York in a single payment.
Again i have a single field "price" but i need another fied that looks like "price" for the "round-trip (or day return)" tickets.
Other feature is to add different kinds of price. For example a ticket has a price but if an user buy it before 10 days he can spend xx% less.
I give you a db schema (that need some updates), the code of the actual reservation system and you can choose to do it from zero (with old and new features) or to add feature to the already done system.