United Machinists Waiting on Airline=20 =09 Tuesday October 1, 2:59 PM EDT=20 CHICAGO (Reuters) - The machinists union at UAL Corp.'s (UAL <http://money.iwon.com/jsp/qt/full.jsp?time=3D0&symbol_search_text=3DUAL>= ) United Airlines said on Tuesday that a "positive and productive dialogue" is under way with the No. 2 U.S. carrier regarding a proposed $5 billion in cost cuts offered by a union coalition but no deals have been reached. The International Association of Machinists said the airline had not yet offered a response to the $1 billion in concessions over five years the unions offered to help United avoid an autumn bankruptcy. It also said no agreements had been reached regarding how the wage concessions would be divided up among the five unions making up the coalition. "If United responds favorably to the coalition's proposal, these items will be the subject of further discussions with the carrier," the IAM said in a statement to members. No further meetings were scheduled as the union awaited the airline's response, said spokesman Joe Tiberi. The presidents of the IAM Districts 141 and 141-M met with United's Chief Executive Glenn Tilton on Monday.=20 =A92002 Reuters Limited.=20