# Sample flow in Amazon Connect for A/B contact distribution testing
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**Note**  
This topic explains a sample flow that is included with Amazon Connect. For information about locating the sample flows in your instance, see [Sample flows in Amazon Connect](contact-flow-samples.md). 

Type: Flow (inbound)

This flow shows how to perform an A/B call distribution based on a percentage. Here's how it works: 

1. The **Play prompt** block uses Amazon Polly, the text-to-speech service, to say "Amazon Connect will now simulate rolling dice by using the Distribute randomly block. Now rolling."

1. The contact reaches the **Distribute by percentage** block, which routes the customer randomly based on a percentage.

   **Distribute by percentage** simulates a dice roll, resulting in a values between 2 to 12 with different percentages. For example, there is 3 percent chance for the "2" option, 6 percent chance for the "3" option, and so on. 

1. After the contact gets routed, the **Play prompt** tells the customer which number the dice rolled.

1. At the end of the sample, the **Transfer to flow** block transfers the customer back to the [Sample inbound flow](sample-inbound-flow.md).