Can someone tell me the name of the song and the artist where the lyrics include something about... were the lady picks the guy up in the taxi - she was going to be an actress and he was going to learn to fly?

It's called Taxi and it's by the late Harry Chapin:

"You see she was gonna be an actress,
And I was gonna learn to fly,
She took off to find the footlights,
And I took off to find the sky."