Dialogue between two friends about the uses and abuses of Facebook

Lubna : Hi Runa, How are you?
Runa : Fine and you?
Lubna : Well. What are you doing?
Runa : I am using Facebook.
Lubna : What is the main purpose of using Facebook?
Runa : It is one of the best medium for communication. It allows user to communicate with friends and make new friend around the world.
Lubna : Why do you use Facebook?
Runa : Because it gives me the opportunity to share my ideas, feelings, activities, interests with people. I can know about the culture, values, custom and tradition of other countries.
Lubna : Is there any other benefit?
Runa : By creating a group, students can use facebook for group study where they can share any information about projects, homework, assignments, exams etc.
Lubna : Is it free?
Runa : It is free but you have to pay for Internet service.
Lubna : Is there any disadvantage of using facebook?
Runa : Every social network has uses and abuses. Some disadvantages of facebook are it makes eyesight weak, wastage of time, poor result, cyber crime etc.
Lubna : Thanks for your information.
Runa : You are most welcome.