  The integration of generative AI in the field of education is actively being
explored. In particular, ChatGPT has garnered significant interest, offering an
opportunity to examine its effectiveness in English as a foreign language (EFL)
education. To address this need, we present a novel learning platform called
RECIPE (Revising an Essay with ChatGPT on an Interactive Platform for EFL
learners). Our platform features two types of prompts that facilitate
conversations between ChatGPT and students: (1) a hidden prompt for ChatGPT to
take an EFL teacher role and (2) an open prompt for students to initiate a
dialogue with a self-written summary of what they have learned. We deployed
this platform for 213 undergraduate and graduate students enrolled in EFL
writing courses and seven instructors. For this study, we collect students'
interaction data from RECIPE, including students' perceptions and usage of the
platform, and user scenarios are examined with the data. We also conduct a
focus group interview with six students and an individual interview with one
EFL instructor to explore design opportunities for leveraging generative AI
models in the field of EFL education.
