1. Opening remarks: You can open the copy with kind greetings, such as "Dear customer, good evening!"
2. Remind the service time: Remind the customer that it is evening, and remind the customer of the closing time of the language lab, for example, "It's already evening, please note that the language lab will end its service at XX:XX in the evening, so please finish the operation or ask questions in advance."
3. Remind common problems: list some common problems that customers may encounter, such as account problems and technical failures. At the same time, you can provide guidance or contact information to solve the problem, such as "If you encounter account login problems, you can try to reset your password or contact our customer service team for help."
4. Thank you: Thank you for your cooperation and support, and thank you for choosing to use the sound hall today, such as "Thank you very much for your trust and choice in the sound hall all day."
5. Conclusion: End the copy amicably and thank the customer again for their understanding and cooperation, such as "Thank you again for your support and cooperation, good night and see you tomorrow!"
Of course, the specific content of the copy can be adjusted and improved according to the actual situation to better communicate and interact with customers.