PTA means Prepaid Ticket Advice. This means the ticket has been paid for and the physical ticket can be collected from the Airlines office at the place of departure. Actually nowadays people don't resort to collecting a physical ticket booklet because you get e-tickets.

Anyway check it out with QP whether you have to collect a physical ticket at the airline office or whether you will get the e-ticket details scanned and emailed to you or faxed.