A method for generating a conversational user interface is provided. The method is executed by a processor to perform the following steps. Extract the content of a webpage. Obtain a first form in the webpage. Obtain multiple first fields according to the first form. Create a first slot filling model based on the multiple first fields. Generate a conversational user interface. The processor is configured to use the first slot filling model to determine data required by the first fields, and obtain data that can be filled in the first fields according to an input dialogue data to fill in the first fields.