Indian Finance Minister Arun Jaitley has met his Pakistani counterpart Ishaq Dar on the sidelines of the annual general meeting of the Asian Development Bank.The two ministers had a brief informal interaction on Wednesday when both were seen exchanging pleasantries in this German city. Though it was just shaking of hands and exchange of a few words, the leaders tried to send out a message that things will improve between the two neighbours, observers said.Earlier, both the ministers were in Frankfurt, on a day's official visit for the annual meeting of the ADB board of governors.