In Home Personal Training Business - Advice needed to design the introductory session

Starting an in home personal training business. We are going to offer a discounted session where someone can get a trial. The goal is to sell the customer on a bulk package of 12-36 sessions and also get an assessment of their fitness level to develop a personalized workout. We want to make the customer feel satisfaction as many times as possible in the 60 minute introductory session and commit to a plan. Any advice on how to do this would be greatly appreciated!

Thanks :D