You can say that this internship has given me a clear understanding and overview about consulting and for that reason I got a sense on the skills needed for consulting and I’ll develop my skills ( through online courses..) to be able to meet the required skills of consulting. Also never forget to mention that you’re doing the internship to see whether you want to continue-in consulting or not, so it’s better to mention that you want to join the firm and you’ll apply for consulting roles further.