Given the question "Why did Egyptians build Aswan High Dam?" and the answer "In order to control the flood.", write a conversation that might have happened.

W: Are there any long rivers in Africa?M: Yes, for example, the River Nile is the longest fiver in the world.W: Is it Egypt? I hear that it used to flood large areas. What about it today?M: In order to control the flood and make electricity, people built the Aswan High Dam on the river.W: Then it is another interesting place, isn't it?