Candidate referred by a friend / family to a contact / connection in a field seeking for a job / career advice.
[Referer] thought that you, as an excellent [description of the connection – alumni, mentor etc.], would be able to assist me with career decisions. Please find the enclosed my resume for your kind consideration. I started my career with [first job description] and have worked in [description of various fields]. I am experienced in [experience of jobs], and have learnt invaluable skills such as [communication, teamwork etc.]. I enjoyed my roles and working as part of a team. However, I have always been interested in [field] all my life and am keen to launch a career in this direction.