I will give you different Advice.
First let me know why do you want to chat with girls ? Why ?
Just for satisfaction. Right ??
Now think satisfaction is just for moment. It will not give you life living things. After some time Again you do chat with girls and again you will enjoy for short moment and this will become habbit or addiction.
Now just think about your future. How much time you have ? Life is too short too do something so don't waste time for doing this type of stuff.