This happened Friday night at around 8:40 p.m. in the 2800-blk of West Chicago Avenue, Chicago police said.
The male suspect walked into Lola's Coney Island demanding cash, police said.
A fight ensued and the suspect grabbed a knife and attacked a male and female employee, police said.
The offender took off in an unknown direction. No proceeds were taken, according to police.
Both of the victims sustained lacerations but refused medical attention, CPD said.
No one is in custody and Area Three Detectives are investigating.