Saudi Arabia, the UAE, Bahrain and Egypt cut ties with Qatar and imposed an economic boycott last month, accusing it of financing extremist groups and supporting terrorism, charges Doha has repeatedly denied.
UAE Minister of State for Foreign Affairs Anwar Gargash said a call for dialogue by Qatar's emir Sheikh Tamin bin Hamad al-Thani was welcome, but this could only happen after Doha had made changes.
He did not specify these, but the four countries involved have issued more than a dozen demands, telling Qatar to close down Al Jazeera television, curb relations with Iran and shut down a Turkish military base.
"Dialogue is necessary and needed but its backbone has to be revision," Gargash said on his Twitter account.
"I had hoped that the speech of Sheikh Tamim would be an initiative for revision," Gargash said.
Turkish President Tayyip Erdogan, an ally of Qatar, will visit Saudia Arabia, Kuwait and Qatar during a two-day mediation trip that begins on Sunday.
(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)