Orlando City SC midfielder Kaka said his goal is to remain with the Selecao for 2018 World Cup qualifying after the two September friendlies in the United States.
The 2007 Ballon d'Or winner, who played on Brazil's 2002 World Cup winning squad, was a surprise inclusion on Dunga's 24-man squad for two important tests against Costa Rica and the United States. Brazil will face Costa Rica at Red Bull Arena on Sept. 5, before taking on the U.S. team at Gillette Stadium on Sept. 8.
"This year we have four matches more after the two friendlies, and I would like to be part of this group so I will do everything possible," Kaka told ESPN. "In this moment, though, I am thinking about the short period, what I can give to the national team in this moment. I hope at these two friendlies to do everything to stay on national team."
Kaka, the 33-year-old former Milan and Real Madrid player, was included after being left out of the squads for the 2015 Copa America and the 2014 World Cup.
The five-time World Cup champions Brazil will open their World Cup qualifying campaign away against Copa America holders Chile in October.
Their first two home games will be against Venezuela in Fortaleza in October and Peru in Salvador in November.
"I see the national team in a transition period right now. Since the World Cup they have done a great streak with, I think it was 11 matches won and that is a good streak," Kaka said in reference to Brazil having won 10 friendlies in a row headed into Copa America. "And then the Copa America and the loss against Paraguay raised questions again, but I think with patience and all of Brazil behind us we will return to being a credible team."
Brazil lost their second group game in the Copa America to Colombia and were then knocked out by Paraguay on penalties in quarterfinals.
Kaka is the most veteran player in a squad for the two friendlies that includes Neymar, Hulk, Lucas and Oscar but omits Liverpool's Philippe Coutinho and Paris Saint-Germain defender Thiago Silva.
During his professional career, Kaka made more than 89 appearances for Brazil, playing in three World Cups and winning a World Cup title in 2002. The midfielder last featured for Brazil in October 2014, coming off the bench in friendly victories over Japan and Argentina.
He has played a crucial role in Orlando City's inaugural campaign, and the club has attributed his current drought of no goals and just two assists in the last five games to an ankle knock.
"The league is growing a lot," Kaka said of MLS. "Our club is in its first year and it's not easy becausee you are starting a team from zero, new players and a series of things that make a difference in football and so it is not easy.
"But I am happy to play in this league, I see it growing and I know what it can do in future. After I signed with Orlando, many other players who had options in other markets decided to come here.
"I don't know whether my decision influenced them but the fact is that they are here. [NYCFC's Andrea] Pirlo, [LA Galaxy's Steven] Gerrard, [NYCFC's Frank] Lampard, [Galaxy's Gio] dos Santos, [Montreal's Didier] Drogba are all here and for the next markets and transfer windows more will come to play here."