app.py

import gradio as gr

def gradinterface(query, history):
    # Assuming db and chain are already defined
     docs = db.similarity_search(query)
     response=chain.run(input_documents=docs, question=query)
     return response

demo = gr.ChatInterface(fn=gradinterface, title='Fourseason Hotel')



if __name__ == "__main__":
    demo.launch()