#I'm mainly practicing the present perfect tense and the present perfect continuous tense here.
I hadn't seen Luke for (it's also possible to use "in" in the negtive) ten years, but we met (or "ran into", if it was by chance) each other on the street this morning.
"Hi Tracy, how are you doing? What have you been doing (or what have you been up to) recently?"
"Hi Luke, I'm good. I have (or "I've") just graduated from university (or "college", in the US). What have you been doing (for) these (or "the") last ten years?"
"I've been running my company's business in many (or "a lot of") cities. These days it's this city's turn."
"How long have you been running this company? I hadn't heard that you own (or "owned") a company!"
"I created this company five years ago (we cannot use the present perfect with a past time reference), now it's running quite well."
" Wow! Awesome! I've just finished shopping, where are you going right now?"
"I've eaten (my) breakfast (US alternative: "I just ate breakfast"), and have been walking along (I believe that's the intended meaning. "Alone" means without company.) this street since 9 o'clock; now I'm going home."