But he's had to improvise at times.
Atkinson discovered Smith working in Apple' s service department and, amazed at his ability to improvise fixes, recommended him to Raskin.
By having a plan while still being able to improvise, you can make situations far less awkward, or much more exciting.
Once you've practiced the written texts, improvise a continued conversation using the same characters as in the dialogue.
Instead of just playing the melody, jazz musicians improvise different tunes using the same chords.