Girl Friday is the antiquated name for an office/personal assistant. Duties for these minions of executives include but are not limited to:

Answering Phones
Making Appointments
Breaking Appointments
Showing Boss Where the 'Enter' key is on Keyboard
Retyping the Document He Was Working On
Cleaning Office Kitchen
Making Coffee
Making It Again When You Use Mocha Java Instead of Hazelnut
Ordering Lunch
Picking Up Drycleaning
Getting Photos Developed
Babysitting Boss's Kids
Getting Boss's Range Rover and Jaguar and Mercedes Washed
Giving the Other Driver $100 to 'Just Forget About This Little Fender Bender'
Polishing Awards
Glueing Award You Dropped While Twirling It Like a Majorette
Enduring Screaming Boss
Getting Fired