Someone from Chicago con, please help!!

I just called the Congress Plaza and was told the rooms at the con rate
are gone. She told me someone from the con must contact the hotel to
book more rooms. Since I only just got my funding to attend the con, I
couldnt book a room any earlier, and really hope someone can do
something. Please email me at oldspice44 at att.net and let me know if
theres any hope!!
Bev