Sales Training

I am in need of a sales trainer who will provide comprehensive training to a fresher from scratch. The training should cover the following specific skills: closing techniques, prospecting and negotiation skills. I am looking for a program that is interactive, and utilizes role-playing exercises. The ideal duration for the sales training program is medium-term, which should last between 3-5 days. I am seeking a freelancer who has expertise in sales training and can deliver a program that is engaging, informative, and effective.