F: My hobby is flower arranging. What's your hobby [ What's yours ]? [This is all correct English but seems a bit like something from a book for young children, where everything is s-p-e-l-l-e-d o-u-t. In real life: "Yeah, flower arranging. How about you?"]
This is how I would write it as a native UK english speaker.
M - Do you have any hobbies? F - My hobby is flower arranging. What's yours? M - I enjoy tea ceremony. These days more and more men get enjoyment from practicing tea ceremony.