Write a letter of application (120-150 words). Include: 1)reason for writing

Good day! My name is Mark. I really want to work in your company. At the moment I am a ninth grade student. I want to earn money in order to fulfill my dream of going to a language camp abroad. I have already had experience of working as a courier last year, so I think I can handle this job with you. I delivered mail to different companies and carried out small orders of my boss. I have a bike, so I can quickly move around the city. I am responsible, sociable and serious about the tasks. I am ready to come to the interview at any time. Please let me know if my candidacy is right for you. Thank you!