https://biginterview.com/blog/2013/04/why-should-we-hire-you.html
Example1 (Blackrock):
My major interest in software engineering is Java development, since my primary programming language is Java, it is also the first programming language I learned, which is meaningful for me. I have several projects based on Java including a web crawler of an online music website based on Java Spring framework as well as the backend part of an online blog system based on Java.
Well, I have all of the skills and experience that you're looking for and I am confident that I would have a good performance in this software engineering role. I have years of programming experience you're looking for, a track record of successful course-based projects as well as my internship experience.
Moreover, I am also passionate about working in a team in this industry, my communication skills helps me develop great relationships with co-workers. I am excited to learn new things and to get experience in every possible way.