May I please know how to draw an Use Case Diagram for this question? Thank you.

Draw a use-case diagram for the following system. A Real Estate Inc. (AREI) sells houses. People who want to sell their houses sign a contract with AREI and provide information on their house. This information is kept in a database by AREI. AREI works with two types of potential buyers. Some buyers have an interest in one specific house. In this case, buyer sends specific request to the system and AREI displays the result from its database. Other buyers do not have specific target. They complete a buyer information form and system uses its information to search AREI's database. The results of these searches are displayed and used to help the real estate agent show houses to the buyer