Being Introduced by a Mutual Friend

A friend introduces you to someone new, and you exchange pleasantries.

Friend
Mira, te presento a mi amigo. Viene de Estados Unidos.
MEE-rah, teh preh-SEHN-toh ah mee ah-MEE-goh. VYEH-neh deh ehs-TAH-dohs oo-NEE-dohs.
Look, let me introduce you to my friend. He's from the United States.
"Te presento a..." is the standard way to introduce someone. "Mira" (look) is used to get someone's attention casually.
Local
¡Mucho gusto! ¿Cómo estás? Me llamo Sofía.
MOO-choh GOOS-toh! KOH-moh ehs-TAHS? meh YAH-moh soh-FEE-ah.
Nice to meet you! How are you? My name is Sofía.
You
Mucho gusto, Sofía. Encantado. He escuchado mucho de ti.
MOO-choh GOOS-toh, soh-FEE-ah. ehn-kahn-TAH-doh. eh ehs-koo-CHAH-doh MOO-choh deh tee.
Nice to meet you, Sofía. Charmed. I've heard a lot about you.
"Encantado" (male speaker) or "encantada" (female speaker) means "charmed" or "delighted to meet you." A slightly more formal alternative to "mucho gusto."
Local
¡Ay, qué lindo! Espero que todo bien. Bienvenido.
ay, keh LEEN-doh! ehs-PEH-roh keh TOH-doh byehn. byehn-veh-NEE-doh.
Oh, how sweet! I hope all good things. Welcome.
Being introduced through a mutual friend instantly creates warmth. Latin American social circles are very welcoming to friends of friends.