Definition: Generate an appropriate title for the given text. The generated title must be short and include the main topic of the text. The preferred titles are under fifteen words.
Input: Controllers who are members of the Prospect union are seeking an improved pay deal from their employer, Highlands and Islands Airport Limited (Hial). Industrial action by the Prospect members is due to start in April and continue through the summer. Prospect and Hial have agreed to seek the support of Acas. Representatives from the union and airports company have met three times since the result of a ballot on strike action. Seven of Hial's 11 airports would be affected by industrial action. They are Benbecula, Dundee, Inverness, Kirkwall, Stornoway, Sumburgh and Wick John O'Groats. Hial said: "At this point, it has not been possible to reach an agreement with the trade union on their pay dispute. "Therefore, Hial and Prospect have agreed to refer the matter to Acas in a bid to resolve the matter."

Acas to be asked to resolve Hial controllers dispute