US Contact Name and Address in DS-156 form?

I'm going to attend an upcoming conference in USA but haven't booked hotels etc so what would be the contact name, address in the DS-156 (Business visitor) Visa application form? I don't think that I'd book a hotel before my visa is stamped. It'd be great if you can help me asap because appointment dates are not too many.

Answer:
you could put the conference contact and address,
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