Looks good, just I´d suggest some minor changes:
"The IP Address of Network A and Network B so I can check is there any traffic go thru from both sites," should be changed to, "I´ll need the the IP Address of Network A and Network B so I can check the connection between the sites."
"Hang on. Let me check it first," can be changed to, "Hang on, please, and I´ll check them now..."
You´re using some very native word choices, though