Why has Mia called you?

She needs an interactive seat cushion

Mia stood up as you walked in. "Jack, this office chair is far too uncomfortable to allow me to focus on my work for the next hour! I need a cushion! Now get over here!"

You immediately rushed over to her, sitting yourself in the space between her desk and her chair, before laying your head back on the seat.

"Mhhhhm," you heard a purring noise along with some shuffling movement just outside of your vision. "You have always been a good secretary, now you will need to demonstrate your intuition as to what I require before I require it!"

Mia steps into view with her skirt now bunched up about her waist revealing her bare ass and vagina. You can only stare in excited trepidation as she starts to slowly lower herself onto your face, eventually completely cutting off your air. She readjusts her position slightly to ensure you can breathe, but just barely.