In recent years, while AI technology has advanced rapidly, labor shortages due to a declining population have become increasingly severe, particularly in the sales sector. To address this challenge, AI could potentially enable effective sales approaches tailored to the user's personality, thus realizing AI-driven sales activities. Using the bridal industry as an empirical field, this study explores a method for optimizing the speech behavior of dialogue-generating AI based on users' personality traits (sales AI method). As a first step, by utilizing the GPTs provided by OpenAI and referencing innovative orientation assessment questions that incorporate various elements, including the psychological personality test MBTI, we were able to construct questions that achieve a highly accurate orientation assessment tailored to the bridal industry.