How can you shorten conversation with your clients without being arrogant?

[Btaliat]

Majority of the freelancers always find themselves getting tensed when chatting with their potential clients. They do spend so much hours convincing them or even negotiating on price. This makes it necessary for the freelancers to know how to be taking to the clients in such a way that they won't feel bad or insulted. Some may see cutting short the conversation as a way of hiding or even being arrogant. What are the methods you think you can adopt?