Formal:
* "Mucho gusto, Pedro." (Nice to meet you, Pedro.)
* "Encantado de conocerle, Pedro." (Delighted to meet you, Pedro.)
* "Un placer conocerlo, Pedro." (A pleasure to meet you, Pedro.)
Informal:
* "Hola, Pedro." (Hello, Pedro.)
* "Mucho gusto, Pedro." (Nice to meet you, Pedro.)
* "Igualmente." (Likewise.)
Adding a personal touch:
* "Hola, Pedro, ¿cómo estás?" (Hello, Pedro, how are you?)
* "Me llamo [Your Name], encantado de conocerte." (My name is [Your Name], pleased to meet you.)
Remember to smile and be friendly!