GUI form code comprising a set of GUI elements can be imported. A user interface description can be generated from the GUI form code that has an element corresponding to each GUI element. For each user interface element converted from a corresponding to one of the GUI elements, a user interface element type can be determined as can temporal associations between the user interface elements. A Conversation User Interface (CUI) code corresponding to the GUI form code can be created from the user interface description. When creating the CUI code for each of the user interface elements, different and rules to convert the user interface element into CUI code can be used depending on a user interface element type of the user interface element being converted. When creating the CUI code, the user interface elements can be temporally ordered based on the pre-determined spatio-temporal associations between the graphical user interface (GUI) elements.