Explore the areas of the city to find a best house for your Clients, then your Client will be Happy.
First you need to Understand the needs of your clients with different requirements and try to find the best House. You can offer them some Area and if they are fine with that Area, then try to find the best House due to their Budget. Do not forget you commission too, because that makes you Rich and you can growth your business and hire more stuffs.

Good to know the Game Rules:

Get rich and earn by get commission
Upgrade your properties to earn more
Improve your skills in negotiate and communication
Make sure to only buy the best properties in areas.
Clever action requires strategy, just like in real life!