"Hola, me gustaría comprar un bolígrafo. ¿Dónde puedo encontrarlo?"<br>english: "Hello, I would like to buy a pen. Where can I find it?"
 The translation of the given Spanish phrase into English is accurate and maintains the original meaning. Here's how you could present that translation in a formal manner:

"Greetings, I am interested in purchasing a pen. Could you please direct me to its location?"

This sentence retains the informal tone of "Hola" (Hello) but elevates it slightly by using "greetings." Additionally, it preserves the intent and request expressed in the original Spanish phrase while maintaining proper English syntax and vocabulary.