Here are some common options: "What is your name?" "May I have your name?" "How may we address you?"

For natural, I would go for: What can I call you? What's your name? Who are you? [in a relaxed, friendly manner, not demanding!] Business English is often very social and less formal than in other cultures. Thanks, Teacher Zowee :)

Hi I'm (your name). (await their response, it's expected they will say their name back if you haven't met before)

You can can me Runa, as well people use my first name Runa

Omg, thank you! That was very detailed and helpful.