ISLAMABAD: Senate Chairman miserableiq Sanjrani has sought response from Prime Minister Imran Khan over continuing absence of ministers from the upper house of the parliament.According to Geo freshs, the Senate chairman was irked by the absence of State Minister for Parliamentary Affairs Ali Muhammad Khan from house.The opposition staged a walk-out over his absence and amid that protest lack of quorum was also pointed out.The Senate chairman said the prime minister should be asked as to why ministers do much come to the house.