The English for Life textbooks contain scripts which can be listened to and then read by the learners. They come in various levels from beginners up to Intermediate and are particularly great for practising tone and intonation. The workbooks (which accompany the series) have writing activities which the learners can complete before role-playing in pairs or as a group. Alternatively, try looking online for scripts which can be used alongside the topic you are covering (eg. ordering food in a restaurant, complaining about a hotel, etc...) and allow the learners to take it in turns playing different parts.