Could you come and help me mend the computer , Neel ?
neutral
user
What's wrong with it ?
neutral
assistant
I can't log on the internet again .
neutral
user
Let me see . Did you change anything on your computer ?
neutral
assistant
No , never .
neutral
user
What kind of anti-virus software do you use ?
neutral
assistant
I don't have this kind of software .
neutral
user
Are you riding ? You have to install an anti-virus software on your computer . If not , you will be attacked by viruses , and it can lead your computer into failure .
surprise
assistant