Dear Sir/Madam,
I am licensed in sociology, so I acquired knowledge and experience in research, data collection and analysis.
I believe I am the right person for this job because I am committed, reliable, attentive to detail, and I will do my best to accomplish the tasks exactly as you want.
I hope you'll give me this chance and/or discuss the details of this job.
Thank you in advance for reading my offer.
Sincerely,
Filipa