I emailed a professor about a potential lab position in the summer about two weeks ago. He replied a very nice e-mail the next morning saying that he is interested and has open positions. He asked for some information (transcript, CV). I sent those to him that same day and we exchanged a few e-mails. After that he just went ghost... I sent a follow-up e-mail after one week, still no response. Now it has been two weeks and I'm debating whether I should send him another e-mail.
Is this kind of situation normal? What's the best action in this case? I've had tons of experiences of professors not replying e-mails, but this is new to me... I definitely don't want to sound annoying by sending multiple follow-up e-mails. Any help would be appreciated!