Hey {first_name},

Just following up with you, I left you a message the other day. Point of me reaching out to you

is that I'm looking to partner up with a real estate specialist in the {city} area who can take on some listing from some clients needing a Realtor?

If you're not too busy to handle them, when is the best time for me to call you. 

If not, who do you recommend I talk to?

Thanks,

{email_signature}