barret books a glamorous reception room for an industry conference at constellation, a large conference centre in Melbourne. due to an unforseen illness, he cancel the conference a week before it takes place, at the point of cancellation, the conference reception room had already been decorated and promoted by the constellation for the conference of barret. unbeknown to barret, constellation had forgone a lucrative alternatives contract due to Barrett booking. the contract between Barrett and constellation does not provide any detail on late constellation bit does provide the following clause,,, usual contract damage apply for breaches, is Barrett liable for damages? is so hoe would these calculated