Allan is a salesman at a local electronics store and works on commission. when customers come in he does not leave their side until they walk out the door. he talks to them, shows them different equipment, and makes suggestions for accessories they might not have considered. allan's behavior is best described as

Assertive.

Explanation:

Assertive behavior means standing up for and going after what you want (in this case a sale) without being overbearing/aggressive or too shy/passive. Assertive is a positive balance between the two extremes and means people clearly and directly state what they want or take action to achieve it.