Do not send friend request b4 u talk with me.
I don't like only just 'hello', 'hi'.
I understand some people say like that cuz have no idea how to open a conversation.
If you wanna open conversation, just make topic by yourself.
About you, me , country, language, anything.
Give questions which conduct non-yes/no answers.
I think these are basic and manners for oppionent.
Not only to me, to everyone.
And for your happy on interpals ^^