Speaking to someone with a stutter?

Speaking to someone with a stutter? Hi guys! I don't have a stutter but was speaking to someone yesterday and they did. They were having trouble getting their words out and I wasn't sure what to do or say so I just made sure to show I was listening and didn't really acknowledge it. Is that OK? I didn't want to say anything like "take your time" or finish off their words for them cause that kinda seemed really patronising. Also just wanted to say that people who do stutter are really cool and resilient but no different to anyone else and deserve to have their voices heard. Stay awesome xxx