Courtesy is important no matter what country you're in. Use these courtesy phrases when speaking in Italian so you can be considerate and polite; they'll also help you communicate easily:
Per favore (pehr fah-voh-reh) (Please.)
Per piacere (pehr pyah-cheh-reh) (Please.)
Grazie (grah-tsee-eh) (Thank you.)
Prego! (preh-goh) (You're welcome!; By all means, after you.)
Non c'è di che. (nohn cheh dee keh) (You're welcome.)
Mi dispiace. (mee dees-pyah-cheh) (I'm sorry.)
Mi scusi. (mee skooh-zee) (Excuse me, formal.)
Scusi, un informazione, per favore. (skooh-zee oohn-een-fohr-mats-yoh-neh pehr fah-voh-reh) (Excuse me, I need some information, please.)
Scusa. (skooh-zah) (Excuse me, I'm sorry, informal)
Permesso? (pehr-mehs-soh) (Excuse me — when walking through a crowded train compartment; also, "May I come in?" when crossing the threshold of someone's house.)
Sì. (see) (Yes.)
No. (noh) (No.)