First of all, you should know the travel time of your customers. It's best to call him at 9: 00 a.m. 10 a.m. and make an appointment. If you need to make an appointment for the next time after making an appointment, be sure to make it clear who you are calling and what you want to talk about. Be sure to explain the key points, grasp the key points, pay attention to the tone, and don't be nervous. Nothing. Just an ordinary person. Nothing.