Javier Loaiza is a customer service agent at the Coney Island Stillwell Avenue Station in Brooklyn.
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He's been on the job for three years and is part of the MTA's initiative to get customer service agents out of the booth and into the station to better assist riders.
Javier's co-workers often call him "smiley" because his personality and attitude are so contagious.
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He says a simple smile can help change a person's day.
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