You need to find out where they hang out (i.e. industry events) or write them a concise and powerful email about who you are and why they should give you the time of day.

FORBES: Five Things You Need To Know About Internships

Ability to write in a clear and concise manner and to communicate effectively orally.

UNESCO: Vacancy : Chief of Protocol (4/7/2011) (# ERC 147 - (P4))