Union education minister Dharmendra Pradhan and railway minister Ashwini Vaishnaw will flag off the extension of Banaras-Sambalpur-Banaras bi-weekly express from Sambalpur to Visakhapatnam on November 20. The regular service will start from November 22 from Visakhapatnam and November 23 from Banaras. East Coast Railway (ECoR) is responsible for the operation.