If I understand correctly, you'd like to know if there is a conversation in each lesson of the Spanish course? In Essential Spanish, you'll find 2 conversations per lesson - one appears on the left side of the page and the other on the right. In Intermediate, the structure is a bit different so you'll find words and phrases in Lessons 1, 2, 5, 6, 9, 10, 13, 14, 17, 18 and dialogues/sentences in 3, 4, 7, 8, 11, 12, 15, 16, 19, and 20.  They will all appear on the left side of the screen. 

If I haven't answered your question, please let me know how I can clarify. 
Best

Erin