Greeting Elders Respectfully

You greet an older person using the formal "usted" form to show respect.

You
Buenas tardes, señora. ¿Cómo está usted?
BWEH-nahs TAR-dehs, seh-NYOH-rah. KOH-moh ehs-TAH oos-TEHD?
Good afternoon, ma'am. How are you?
Always use "usted" with older people, authorities, and anyone you want to show respect to. It is never wrong to be too formal.
Elder
Muy bien, gracias a Dios. ¿Y usted, mijo?
mooy BYEHN, GRAH-syahs ah dyohs. ee oos-TEHD, MEE-hoh?
Very well, thank God. And you, dear?
"Gracias a Dios" (thank God) is extremely common, even in casual conversation. "Mijo" is short for "mi hijo" and is a term of endearment older people use with younger ones.
You
Muy bien también, gracias. Es un placer conocerla.
mooy BYEHN tahm-BYEHN, GRAH-syahs. ehs oon plah-SEHR koh-noh-SEHR-lah.
Very well too, thank you. It's a pleasure to meet you.
"Conocerla" ends in "-la" because you are addressing a woman. Use "conocerlo" for a man. This shows respect and grammatical awareness.
Elder
El gusto es mío, joven. Que Dios lo bendiga.
ehl GOOS-toh ehs MEE-oh, HOH-vehn. keh dyohs loh behn-DEE-gah.
The pleasure is mine, young one. God bless you.
"Que Dios lo bendiga" is a common blessing from older people. "Joven" (young one) is an affectionate way elders address younger people.