Good morning/afternoon! I really appreciate to have this opportunity to stand here receiving this interview. Let me make a brief introduction to me, my name is XXX, 20 years old, come from Chengdu.
前边也给你改了改，原文有错。
My major is Tourism Management and I think it can help me to be a trainee in the hotel.
我的专业是旅游管理，但是我认为我所学的专业知识对在酒店实习有很大帮助，
Hotel is one part of the tourism business, people traveling around make hotel necessary. Therefore, I can service customer as well as their travelling.
因为酒店是旅游行业中不可缺少的一部分，人们大多是因为到各地旅游才住进酒店，而我不仅能在他们入住酒店后为他们提供服务，并且还能在他们的旅途中提供服务。
（你这个原文表述的不是很明白，我给你改了改）
The reason why I choose a hotel is I like this job, hope to apply my knowledge to practice, and why this hotel? This hotel is well known for its good working environment which I like very much.
之所以选择这家酒店，首先，是因为我喜欢这份工作，希望能够将书本上学到的运用到实践当中，其次就是我喜欢这家酒店，喜欢这样的工作环境，
（话不通，我也改了改）
To be a trainee in this hotel would be very helpful to me, I would do everything with efforts to make me qualified to hotel if I can get this opportunity to work with you.
而能进这样五星级的酒店进行培训实习，是我的荣幸。
（没什么荣幸的，感谢就行了）
Thank you very much!
非常感谢。
参考资料：很简单，但是你要把握说话的精髓——信心。