@gh4u on the other hand, the designer stated that the chairs and sofa are vintage, which means the pieces were purchased a long time ago and or 2nd hand, therefore, she is not giving a source/store to purchase from because the pieces would most likely no longer be available. Maybe she purchased the sofa from a garage sale, would telling you that help you buy the sofa? I think not, thus she used the word vintage assuming one would consider the aforementioned.
Also in her defence, she does answer many questions. #beakindhuman
Check out your local newspaper, 2nd hand furniture stores, Goodwill, or online Craigslist or Kijiji for some great vintage finds. Also be careful to inspect the furniture, take a small flashlight and pull back seams and or piping/welt and inspect.
Q