script or ea to move the order

I'd like to know if there is a script or ea that works in this way:
I put two order, for example
buy 1.5000 SL 1.4950 TP 1.5200
sell 1.4850 SL 1.4900 TP 1.4700.

If buy is executed, then move the sell at 1.4900, with the same SL and TP.
Or, if It's no possible, if the buy is executed, put new order that I decided.

I hope it's clear.

Enrico

ps:sorry for the english