To what Carmen E said. Rivas, it should be added that in the aforementioned television program, Hugo Chavez scolded his collaborators and mocked his opponents, the viewers, and even, mocked himself.
It's a way to respond to a call from the president. It's like saying: say, President.
"Hello President" refers to a television program made between 1999 and 2012, which was moderated by the president of the Bolivarian Republic of Venezuela, Hugo Chávez, in order to maintain active and direct communication with the people. It was broadcast on Sundays from 11 : 00 to . m . and was long-lasting (an average of 6 hours).