The objective is to launch a crewed spacecraft to lower Earth orbit. Except the perigee must be higher than 100km altitude, there is no other constrain on the orbit parameters. The emphasis is that the launch itself is not planned in advance.
If an organization that is capable of sending people into orbit (NASA, Roscosmos, CNSA, ULS, SpaceX, etc.) starts working today, how long will it take to have a launch?