Sorry, too late...
Even if there are real signals, by the time they get here, the civilisation (and probably the species if not the planet) will be long gone. But in any case a conversation would be hard to sustain as by the time the answer is received the question would have been forgotten.
It's hard for us (and apparently even for astronomers) to recognise that the universe as we see it doesn't actually exist. We're not just looking into the past, we're looking at thousands of different pasts alongside each other. A lot of it probably isn't even there any more.
Biting the hand that feeds IT
