Reporters grew irritated Friday evening as they remained on a late-night Trump campaign conference call in which senior staffers refused to go on the record and few details were offered.

Media were invited to the call shortly after the Republican candidate's camp announced his "Closing Arguments" tour, which kicks off this weekend in Gettysburg, Pa.

The tour is aimed at appealing to voters one last time before the Nov. 8 election with the message that Trump is better suited for the White House than his Democratic opponent, Hillary Clinton.

The GOP nominee's team explained in a statement before the call that Trump plans to, "speak to every American tomorrow about his positive vision to restore our economy, give government back to the people and outline the immediate steps he will take in the first 100 days to Make America Great Again."

The conference call, which the campaign pitched as a briefing on Trump's "major" upcoming speech, was scheduled originally for 9:30 pm EDT. It was then moved to 10:00 pm EDT.

When the call eventually started, campaign staffers made it clear they were not to be quoted by name.

Trump's team continued for the next ten minutes explaining in vague terms that the nominee would use the "Closing Argument" tour to lay out the "clear difference" between himself and Clinton, and that he would use the final days of the election to explain how he plans to "make America great again."

They also hinted that the candidate would likely roll out new details regarding his jobs and immigration platforms, but they offered no specifics.

At around 15 minutes into the call, and as Trump's team continued to repeat information that is readily available on the candidate's website, some reporters appeared to grow restless.

One journalist asked for "concrete" details on which new thing Trump would unveil on the campaign trail this weekend, to which a senior staffer responded by saying they put "new details out every day."

"We offer new solutions every day," the campaign aide said, adding "You're going to see continuing with the same kind of principles he has been outlining. You're going to see some additional policy details … we're not going to say what that is now, but everything is just consistent with and part of what his visions has been the whole campaign."

Another reporter asked if Trump plans to give any "clarity" on his immigration reform platform.

"You may see some additional details fleshed out on some of those points tomorrow, but I don't want to give anything away on that," a staffer for the Republican candidate said.

Another reporter jumped in to ask, "Is there anything new tomorrow?"

"We know what his policies are [on the website]," the reporter said. "Is there anything outside of those that will be discussed?"

An anonymous Trump staffer replied, "There will be new material tomorrow."

"But the more fundamental thing though, that, you have 100 different policies, and 100 different priorities, and 100 different goals," the aide said.

The reporter interjected to say, "I'm trying to figure out what's new and what we should be paying attention to."

"I don't want to say what it will be," the Trump staffer replied.

"Okay, then why are we on this call?" the reporter asked.

There was a brief moment of silence on the call before one senior Trump aide asked, "Who the heck is this?"

The reported then identified himself and his employer and repeated his question, which was to ask whether the nominee's team planned to reveal anything new in the conference call.

There was another brief pause, and the original Trump staffer referred the question to another unnamed campaign aide.

That senior staffer explained that the tour kickoff tomorrow is important and newsworthy because it'll offer a "roadmap of what Mr. Trump's first 100 days in office would look like and what the key focal points would be."

The only concrete piece of new information during the nearly 30-minute call came at the very end – when Trump's team revealed Gettysburg had been chosen as the location of the tour kickoff because the candidate believes Abraham Lincoln is an important figure in GOP history.

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This article has been updated.