Perth to Melbourne or Sydney return ticket in COOGEE, Western Australia for sale

This is a legitimate and legal post. I have no immediate requirement for a flight hence the sale of the ticket.
As part of my credit card deal, I receive an included return Qantas flight from Perth to Sydney or Melbourne or Adelaide. Conditions of the ticket allow me to book it in someone else's name.
The flight has to be booked before the end of April, but travel does not have to be completed until 31 March 2016.
Flights are subject to availability. You will need to provide me with your preferred flight details and I can subsequently check availability.
Please contact me on SMS with your interest. You will then need to supply dates and preferred flight details of travel. As mentioned, flights are subject to availability. Office hours for bookings are daylight hours so if you contact me in the evening, I will not be able to check until the next working day.
The price is the same as it cost me and is not negotiable.