The phrase "a request to discuss" is correct and usable in written English.
You can use it when you want to formally express the desire to have a conversation or dialogue about a specific topic.
Example: "I am sending you a request to discuss the upcoming project deadlines and deliverables."
Alternatives: "a proposal to talk" or "a suggestion to converse".
His spokeswoman didn't respond to a request to discuss the speech.
The other directors did not respond to a request to discuss the matter.
Mr. Diamond declined a request to discuss his views on compensation beyond his public remarks.
Schiano declined a request to discuss his relationship with Freeman or their parting, with a team official referring to an earlier statement in which he said, "I guess the best way to summarize it for us is that we've moved on".
The Pentagon turned down a request to discuss its booby-trapped ammunition programs, so it remains publicly unknown how (or even whether) it assesses such risks or how many Western, Afghan or Iraqi troops have been wounded inadvertently by spiked ammunition that found its way to government units.
Romney's campaign did not reply to a request to discuss the candidate's religion.
"It was a perfect game, a perfect day," Halep said – as was her polite response to a clumsy request to discuss her breast reduction operation of five years ago.
The Church of England was contacted repeatedly by The Economist with a simple request: to discuss with someone in the church how the course would be beneficial to its clergy, and to clarify factual queries about the course.
Bush's campaign quickly denied on Twitter any connection to the flyer or the offer for cash, but did not respond to a VICE News request to discuss the incident Monday.
Mr. Wald declined an interview request to discuss what happened next, but according to a CNN staff member who insisted on anonymity to discuss internal matters, Mr. Akin came under immediate pressure from Republican campaign officials to back out of the interview booking.
Major Parker said that North Korean officials contacted the Pentagon recently indicating that they would look favorably on an American request to discuss the possibility of recovering remains.
