Hoolahan, whose only cap came against Colombia at Craven Cottage in 2008 when playing for Blackpool, intends to finish the campaign on a high and force himself into the final reckoning.
"It's simple really, I just hope that if I keep playing for Norwich, and playing well, the call-up might come," Hoolahan said in the Dublin Evening Herald.
"I heard that Trapattoni came to see Norwich against Wolves the other week. I played well and a few of the papers named me as man of the match so maybe he was impressed.
"I haven't given up hope, you can never stop dreaming.
"Players might pull out, you might have an injury or two and I am realistic enough to know that I would need something like that to happen for me to make the squad.
"The squad that the manager has at the moment is the one he will pick for the finals, that seems fairly clear, but you can never say never."