The tutor let you pass, that is, he has the possibility of enrolling you. But you have to go through the normal procedure. As for whether you can be admitted in the end, it depends on your interview performance. As to whether he can help, he won't tell you. Even if he can help, he is not sure whether you are worth it. So now you can contact him in his lab, let him know you and like you, and your chances of being admitted will increase a lot. Moreover, his reply is very detailed, and I should also like to know you very much.
As for the reply, it's simple. Tell him if you think about it. Then say I know, I have registered online, and I will contact Teacher XX, thank you, and so on.