I think this exercise would be better if we had the recording of the two interlocutors to train ourselves. and then if we could play the role of each of the interlocutors.
Hello, You can watch this video to improve your speaking skill. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-oxy0ZQdDYiw.html There are 3 approaches explained in this video based on your level.