Describe for two non-business examples: 1. When you were served in just the way you expected, and 2. When you were consulted, also in a very effective and professional way.
Explain where you draw the line between being served and being consulted. What are your expectations as the customer, and what are the expecations of the supplier (vendor, supplier, consultant)?
Describe the ideal collaboration between two companies in your business culture. What are the key components? In other words, what are the questions, topics, areas where the collaboration absolutely has to work well?