Let's get back to basics: When you speak use the following crib (Thank you John Kowalski): Who you are, Where you are and What you want. The reply, will depend on the last two items. Speak slowly and clearly and if necessary, ask the other party to do the same. With very few exceptions, they'll be glad to help.
Just out of interest, what does the callsign of your local airfield end with? Is it "Information","Radio" or "Tower"?