The context of the following conversation is Casey took her dog out for a walk to get it some exercise on a nice day.:
Casey says It is a really nice and beautiful day today..
The friend responds Yeah, what do you think you are going to do with the day?.
Casey responds Well, I would like to hang out with my dog, because I love hanging out with him..
The friend responds Oh, that's a very good idea..
Casey responds Yeah, but I also wanted to get some exercise, so I am thinking I'll take him for a walk..
The friend responds Oh, a walk is a great way to combine both..