The phrase "assistant with a single" is not complete and lacks context, making it difficult to determine its correctness in written English.
It could potentially be used in a context where you are referring to an assistant who is associated with a single item or task, but more information is needed for clarity.
Example: "The assistant with a single focus on customer service has improved our response times significantly."
Alternatives: "assistant focused on one" or "assistant dedicated to a single".
But Ashley Sierra, an executive assistant and a single mother with three children at the school, said the policy had created an unwelcome burden on her and other less affluent families that could not afford extra workbooks, or software programs to supplement the new policy.
The whole idea of a smart assistant has created a single unified experience — having an assistant designed to work with other assistants kind of flies in the face of all of that.
Set in the 1930s, The Girl Who Knew Too Much (Berkley) begins in New York City with personal assistant Anna Harris discovering a single, final instruction from her murdered boss: "Run". She does so, as far as she can, to Los Angeles, where she reinvents herself as Irene Glasson, a gossip columnist.
He worked with a single assistant.
Like other investigators, he has worked with a single assistant, limiting a sustained investigation.
Working with a single assistant and with pen and paper, the 17th-century architect produced buildings of an artistic and structural complexity that would challenge the most imaginative architect armed with a spaceship's worth of computers and hi-tech materials.
The first time I met Selahattin Demirtaş, the leader of Turkey's largest Kurdish political party, known as the H.D.P., he arrived at a restaurant in Istanbul with a single assistant accompanying him.
Helping to undercut the sentimentality, and to bring out the role of radio in creating celebrity, sensation and a sense of community in the Thirties, William H. Macy does a brilliant turn as a radio sports commentator with a gloriously manic manner who works with a single assistant and provides all his own sound effects.
Ten cell culture pellets were extracted at a time by a single technician with a single assistant; cell pellets were removed one-at-a-time from the -80°C freezer, quick thawed by rubbing between gloved hands, and Qiagen denaturant immediately added.
He killed himself with a single shot, Assistant District Attorney Larry Grant said.
