The objective of this document is to present a rapid dialogue prototyping methodology developed at the Artificial Intelligent Laboratory - Ecole Polytechnique Fédérale de Lausanne. Concretely, the rapid dialogue prototyping methodology is decomposed into 5 consecutive main steps: (1) producing the task model; (2) deriving the initial dialogue model; (3) using a Wizard-of-Oz experiment to instantiate the initial dialogue model; (4) using an internal field test to refine the dialogue model; and (5) using an external field test to evaluate the final dialogue model.