how to make a dialog system with a choice of an answer?

Hi! can you help me? I wanted to make sure that when I approached the npc, I clicked on (E). The npc says the phrase and you have a choice of how to answer (several options). then, depending on your choice, the npc says one or more phrases. please help

Have a look at some tutorials to get it going:

https://www.youtube.com/results?search_query=ue4+dialog

Scrub through some first to see if you like the end result. There are also ready solutions on the marketplace.