Negotiation is a dialogue between two or more people or parties intended to reach a beneficial outcome over one or more issues where a conflict exists with respect to at least one of these issues. Negotiation is an interaction and process between entities who aspire to agree on matters of mutual interest, while optimizing their individual utilities. This beneficial outcome can be for all of the parties involved, or just for one or some of them. Negotiators need to understand the negotiation process and other negotiators to increase their chances to close deals, avoid conflicts, establishing relationship with other parties and gain profit and maximize mutual gains.