Taking their woes to Prime Minister Manmohan Singh, top bosses of India's airlines on Saturday sought his intervention to help them tide over the “bad operating climate” that has pushed all carriers into a deep financial crisis. Dr. Singh gave them a “patient hearing” during the hour-long, high level meeting here and said the government would discuss their “legitimate grievances” to find ways and means of helping the ailing civil aviation sector, particularly airlines, come out of the crisis. Official sources, however, said Dr. Singh did not give the airlines any assurance.