My interest in 3 enhancements

[FareeduddinOSD]

Dear Sir/Madam,

I managed to get the code running. I would like to make the following 3 enhancements to the program too.
The 3 enhancements are:

1.) New feature to change names of existing users.
2.) Add/remove friendship instead of just adding.
3.) Show all friends' names of a given user name.

Do let me know about it. Thank you.

Yours sincerely,
Fareeduddin