It is slang meaning to run fast. I used to hear people use it to describe running in football games when I was cheerleader (she mumbled embarrassedly). "Did you see Bozeman? He was bookin'! They didn't stop him until he got to the three [yard line]."Nov 4, 2003
Is it for booking or bookings?
The singular is a specific booking, the plural is 'bookings in general. ' In your context, "Booking" seems specific and curt. It sounds as if you have fully committed yourself to book something.Oct 24, 2013