It would never work.
"Hello--Lester, Lester, Lester, and Lester. How may I help you?"
"I'd like to speak with Lester, please."
"I'm sorry, Lester was delayed in traffic and won't be here for another hour. Would you like to speak to someone else?"
"Could I speak to Lester then?"
"Lester is with a client and the moment and can't be disturbed."
"Well, is Lester available?"
"I apologize--Lester is hunting wild boar off the coast of Africa and won't be back for three weeks."
"Oh--well, then, might I be able to speak with Lester?"