Having finished reading the conversation script, I can assume that the teacher is exceptionally brilliant and highly skilled at conducting an online class through the chatting app, and his knowledge of English is second best to none. He is not only able to invoke the student’s enthusiasm in learning but also able to exclusively provide what his student lacks of. The teacher, once again, used meaningful resources and always tried to connect the lesson with real-life application. It creates a more practical learning process. However, I found out about several cases of canceled class due to unexpected problems faced by either the teacher or the student. It could be understandable, of course, but others might find it troublesome. As far as I know, we shouldn’t have neglected our student at whatever cost. Thus, I reckon that establishing rules for replacing the fixed teacher with the available one will help to solve the problem.