Systems and methods for managing a call between a contact, a conversation bot, and a human agent are disclosed. The method selects a conversation bot associated with a particular human agent from multiple conversation bots that are each associated with a different human agent. Each conversation bot can be a model trained using conversation data recorded during conversations conducted by the particular human agent with which it is associated. The method connects an audio call with a human contact, and generates audio during the call based upon a voice of the particular human agent. The method determines that a transition criterion is satisfied, and selects a selected human agent from amongst a plurality of available human agents. When the transition criterion is satisfied, the method enables a selected human agent to participate on the call, and continues the call between the selected human agent and the human contact.