"I think to be" is not correct. Say"...because I am quite good..."I am applying for this job because I think to be quite good at communicating with people and interacting with them.
This sentence is not good. You attempt to join with the "and" two things you are hoping for. But when you do that, you must join like things. This would be better to say that you hope they will take your application under consideration. Then include the offer to be available for an interview in your next sentence.I hope you will take my application into account and to have the opportunity of an interview.
I would not thank people in advance in this type of situation. It can seem presumptuous.
Finally, if you are 27 years old, you are not a "boy."
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