A dial is something that just about everyone used back in the day. These were popular devices that people used to turn on just about everything. The sixties and seventies were all about the dial, using one to turn up or down the level of lighting in the room, turning a dial timer, turning a dial on the microwave instead of punching in numbers. Believe it or not the term dial a number comes from the days of the rotary phones.
If you have a dream in which you are trying to dial someone or in which you are trying to operate a dial then this can mean a few different things. For one, it can mean that you are trying to reach someone. There is probably a good friend of yours that has been on your mind whom you haven't had contact with in a good long time and you are trying to get back into contact with them. Maybe you don't even know that you want to contact them, at least not consciously yet, but you really do want to just go out there and see your friend again. You want to be able to talk to them again and to see them again, to see how they are doing. This is what will make you feel good and what will put you an edge above the rest, to make sure that your friends are always in close contact with you.
This kind of dream could also have something to do with the term dial down meaning to calm down. Perhaps you have been too on edge recently and your dream is trying to let you know that it is time for you to just sit back and relax a little bit. This is what needs to happen.