I think you could make it work very well without dialogue.
Here's Lee, big smile on his face and excited about getting his ice cream cone with the last pound in his pocket. He points to the flavor he wants, pays the ice cream vendor, and his eyes get HUGE with excitement. The music is fun, happy, and upbeat.
Lee turns away from the ice cream vendor, takes two steps and is just reaching out with his tongue to get that first taste when some skateboarders careen by and knock it from his hands and into the dirt. The skateboarders laugh at him. Lee is heartbroken. The music is dismal and dischordal as he picks up his dirty ice cream cone. He contemplates eating it anyway, but can't bring himself to do it. Brushing the dirt off of it only makes it worse.
The camera follows Lee around in his distraught state. A little kid points at his ice cream cone, wanting one. Lee tries to give the child the one he has but the kid refuses upon seeing that it's dirty and kicks Lee in the shins. Lee encounters a bum who nods understandingly and pats Lee on the back as he walks on past. People are staring at him in confusion, pity and disbelief. Lee's girlfriend is disgusted with him and points to the trash sternly, motioning him to put it in the trash, but he just can't bring himself to do it. The ice cream is running down his hand and arm. He extends the ice cream cone towards his girlfriend who is walking away from him and just as he gets it arms length away from him, the skateboarder who knocked it out of his hand in the first place skates face first into it. He's carrying a purse that he lifted from some old lady, who catches up with him after he falls off his skateboard, face covered in ice cream. She smiles and rewards Lee with a bit of money for stopping the thief and recovering her purse. Cue upbeat music again, and cut scene to Lee and his girlfriend both smiling, wakling hand in hand and each enjoying a new ice cream cone. Fin.
Have fun!
jag