"Where a petition alleges the failure of defendant to make an exchange of property procured by the plaintiff, it was held defective in alleging a contract to procure a purchaser, with an implied contract to pay the reasonable value of the services, consequently there was no breach of contract for which the defendant was liable in damages to the plaintiff, and the demurrer was properly sustained. Mulhall v. Bradley, etc., Co., 63 N. Y. S. 732, 50 App. Div. 179.