The government has advised passengers to defer travel to European destinations unless it is absolutely necessary as volcanic plumes continued to disrupt flights for the sixth day on Tuesday. The advisory by the Civil Aviation Ministry came as over 41,000 passengers have been stranded following cancellation of the flights to Europe and western countries.<br/> <br/>Government is also in talks with Greece to allow Indian carriers to pick up or deboard stranded passengers as all flights to and from Europe remained suspended.<br/> <br/>Air India and Jet Airways operated flights to the US and Canada taking alternative routes to avoid the affected airspace.<br/> <br/>Civil Aviation Secretary M Madhavan Nambiar said 41,435 outbound passengers in Delhi and Mumbai were affected by the shutdown and the situation is still grim. <br/> <br/>Nambiar said the Civil Aviation Ministry has set up a control room, headed by a Joint Secretary, with officials from Ministry of External Affairs and the Directorate General of Civil Aviation to help those stranded in India.<br/> <br/>Meanwhile, European transport ministers have agreed to ease, from today, restrictions on flights imposed due to the ash cloud emanating from an Icelandic volcano. A diplomatic source told AFP that there is an agreement by the ministers to introduce more flexibility in the restrictions, which grounded most flights in Europe for the last six days.<br/> <br/>The Irish Aviation Authority said in a statement that there would be "an interim, European-wide response to the airspace restrictions arising from the volcanic ash cloud. <br/> <br/>The response will ease restrictions, and this will facilitate the commencement of limited operations from Tuesday morning.<br/><br/>