Bus Ticketing Script

Hello, I need a bus ticketing script to put on a website with the following features: The script must sell tickets online because I'll need to give access to the script both to travel agencies (partners) that can sell tickets to people and to private users who can buy also ticket online by theirselves. Travel agencies/partners/private users will only be able to check in realtime available seats, seats numbers on a bus map, select the seats, print tickets (there have to be a barcode with every printed ticket), cancel bought tickets. About statistics, partners (travel agencies) will only be able to get reports with: # sold tickets (of the partner, not the single user) # cancelled tickets (of the partner, not the single user) # their revenue (of the partner, not the single user) # graphic of how many tickets have been sold on the day/week/month and about time of the days in which they sell more (of the partner, not the single user). About statistics I will be able to check all that I wrote above for every single partner (travel agencies) and total. From the admin panel I can create partners (travel agencies) login credentials while single user will be able to register by himself on the website. About payment system I'll need the user to select between PayPal and another merchant that I'll give further instructions later to the winner of the auction. Just for you to know, in the future there will be a chance that the script will be adopted also on handheld devices (PDAs that will be given to bus drivers) and will have to have the same features of the normal script without the graphic part. Obviously this script will have to check in realtime the available seats from the PDAs and will be able to print a receipt/invoice. This means that the website (where the script will be) have to be opened both with computers and with PDAs. PDAs will also be able to validate tickets (in this way the bus driver can check if ticket is genuine). The script have to include a language file where I can edit variables with my own language. Would be nice if I could switch between english and my own language (multilanguage feature). I hope I've been quite clear with my explanation (if not please ask) and I'm looking forward to hearing from you soon with your best quote. ONLY SERIOUS BIDDERS!