Loki chuckled a little,

"Oh, ignoring me won't make me go away, Stark." Loki wished he could see the face of the inventor as he'd heard his voice. It would be so pleasant to see Stark's face once more, even if it were filled with annoyance and maybe even hate for the Asgardian. "I've long awaited this moment when I'd be able to speak with you, I'm not going away that easily."