person A: My dad and I were talking about the past_comma_ just reminiscing a bit. I'm going to miss these times.
person B: I miss my dad.. been so long.   What did you guys talk about?
person A: Mostly just my childhood and some of his.  His mind is going quickly_comma_ there won't be too many more conversations like that.
person B: my mom had Alzheimers.. it sucks!