In my experience: Ask questions and remember the answers. Ultimately a lot of people like to talk about themselves and their interests. What hobbies are you into? Sewing. What type of things do you sew? Mostly clothes. Got any current projects ‘under the needle’? Yeah I’m making a babygro for my cousin who is pregnant. Etc
Then the key part is: next time you speak remember what they said and ask relevant follow up questions. How’s that babygro coming along? How’s your cousin doing? how far along is she now? It shows you’re interested and care, it’s how you build rapport with people.