SalesRLAgent is a novel framework utilizing reinforcement learning to predict conversion probability in real-time sales conversations.It treats conversion prediction as a sequential decision problem, training on synthetic data generated using GPT-4O.SalesRLAgent achieves 96.7% accuracy in conversion prediction, outperforming traditional LLM-only approaches by 34.7%.Integration with existing sales platforms shows a 43.2% increase in conversion rates when representatives utilize SalesRLAgent's real-time guidance.