Is your feature request related to a problem? Please describe.
No

Describe the solution you'd like
In the Yes/No maybe have an option to continue dialogue "Next".
Multi-Dialogue speech would help with presenting server rules or quest lines for branched questions/answers/quest turn in.

Describe alternatives you've considered
Could not find an alternative

Additional context
None

I just released a beta version for 1.18.2 over https://legacy.curseforge.com/minecraft/mc-mods/easy-npc/files/4862368 which include this feature for testing.

For testing, just spawn a humanoid NPC and use the preset named professor_quiz.npc.nbt which include multi level dialog with different additional effects.

If there are no critical issues in the next 1-2 weeks the next version will be released for all version from 1.18.2 to 1.20.1 (maybe 1.20.2, most of the build tools are not fully ready for 1.20.2 yet) together with an updated documentation.