سلام. خوبم. مرسی. شما چطور؟ Hi, I'm fine thanks. How about you? I don't know if I got your mean or no, If you mean "How about you" by "shoma" you need to add "chetor"

Yeah, that's Excellent.I think this is in calling conversation .when unknown anyone call you you answer him/ her hi, I'm fine ,thanks ,you?!

Hello we do greeting more completed in persian than in english.----- ------- یا سلام خوبم ممنون . شما چطورید ؟ ------ سلام خوبم . شما چطورید؟ یا شما چطور هستید؟