Answer:

yes

Answer	Crossword Clue
YES	"May I help you?"
YES	"Of course"
YES	"Thumb's up" indicator

YES	OK
YES	Up, as a vote
YES	..-man (flunky)
YES	"I'll second that"
YES	"Owner of a Lonely Heart" band
YES	"You bet!"
YES	"You bet"
YES	Affirmative answer

YES	Affirmative reply
YES	Direct-mail response sticker
YES	No's alternative
YES	OK!
YES	Sandburg's "The People, .."
YES	"Absolutely!"
YES	"Close to the Edge" band
YES	Cry of triumph

YES	Possible "20 Questions" answer
YES	Preferred answer
YES	Thumbs up
YES	"Of course I want to marry you!"
YES	What lovers might say
YES	"For you? Of course!"
YES	"Most def"
YES	"Of course!"

YES	Prog band with a Grammy-nominated concert video directed by Steven Soderbergh
YES	"Indeedy"
YES	"Yea"
YES	Unquestionably
YES	"By all means"
YES	Flunky's answer
YES	Affirmative
YES	Aye

YES	Okay
YES	Si, oui, ja or da
YES	Absolutely
YES	Certainly
YES	Absolutely!