Hello how may I help you? i have a questiona bout my mobile service plan I can help. I can't tell you how much data you have used but I can tell you how much data your plan offers. Okay, please tell me how much data is in the plan 50gb. Would you like to upgrade to unlimited for $59.99? Really? I think I've using 100gb! If I upgrade now will I be charged for the overage? No, if you upgrade now we can postdate the unlimited plan so you won't be charged any overages! Hope this helps Great! Then lets do the upgrade Alright. Processing unlimited plan change for you now. One moment please Done. Can I help you with something else? That will be all Excellent. Enjoy your new data plan!