Foundation for Intelligent Physical Agents (FIPA) English Auction interaction protocol allows the customer to handle the auction by both propose and inform messages only, while it can increase the interaction domain for the customer in order to make FIPA English Auction interaction protocol more flexible to use. In this paper, we will propose a model for enhancing FIPA English Auction Interaction Protocol. This model will enable different communicative acts to be available to the customer for different reasons, these communicative acts are "refuse"," failure" and "cancel" messages. Finally, we will show when to use each of the additional communicative acts and for what reasons. These acts are explained using UML diagram and JADE platform as scenarios. 1906 Zahra' Alarabiat et al.