Improv Post Five Week Eight

This is an improv off of "The Circus Animals' Desertion" by W.B. Yeats. Particularly, the first two lines.

I sought a theme and sought for it in vain,
I sought it daily for six weeks or so.
Until I realized the taxi wasn't waiting for
me or this theme. Standing at the curb, 
hands thrown up to either hail the cab again,
or express myself. I don't know how to 
search for a theme. Or a taxi. So I started 
to walk.