How to unit test a single conversational statement

i am working with bots and the Microsoft Bot Framework. I used the DispatchBot template to generate my bot. (https://docs.microsoft.com/de-de/azure/bot-service/bot-builder-tutorial-dispatch?view=azure-bot-service-4.0&tabs=cs)

For conversational testing, i want to create unit tests. Therefore i used this documentation to gather some informations (https://docs.microsoft.com/de-de/azure/bot-service/unit-test-bots?view=azure-bot-service-4.0&tabs=csharp)

The thing is that i dont want to test dialogs, but a single statement (a question and the right answer) How can i implement this?