Definition: In this task, five ordered key facts are given. All the given facts are expressed in natural language. Your job is to generate a story 100 to 1000 words long, that includes all the facts given as input in their order of appearance while expanding upon them to produce a broader, yet coherent, narrative.
Input: Fact1: Travis Bickle is lonely depressed young man living in isolation in New York City, Fact2: Travis After enters to volunteer watching interact with Tom through window, Fact3: pretext takes her out for coffee, Fact4: Tom takes her to see pornographic film, Fact5: fellow taxi driver refers him to illegal gun dealer

Travis Bickle, a 26yearold honorably discharged U.S. Marine, is a lonely, depressed young man living in isolation in New York City. He takes a job as a taxi driver to cope with his chronic insomnia, driving passengers every night around the citys boroughs. He also frequents the porn theaters on 42nd Street and keeps a diary in which he consciously attempts to include aphorisms, such as Youre only as healthy as you feel. Travis becomes infatuated with Betsy, a campaign volunteer for Senator and presidential candidate Charles Palantine. After watching her interact with fellow worker Tom through her window, Travis enters to volunteer, as a pretext to talk to her, and takes her out for coffee. On a later date, he takes her to see a pornographic film, which offends her, and she goes home alone. His attempts at reconciliation by sending flowers are rebuffed, so he berates her at the campaign office, before being kicked out by Tom. Travis confides in fellow taxi driver Wizard about his thoughts, which are beginning to turn violent; however, Wizard assures him that he will be fine, leaving Travis to his own destructive path. Travis is disgusted by the sleaze, dysfunction, and prostitution that he witnesses throughout the city. His worldview is furthered when an adolescent prostitute and runaway, Iris, enters his cab, attempting to escape her pimp, Charles Sport Rain. Sport drags Iris from the cab and throws him a crumpled 20 bill, which continually reminds Travis of her and the corruption that surrounds him. In attempting to find an outlet for his frustrations, Travis begins a program of intense physical training. A fellow taxi driver refers him to an illegal gun dealer, Easy Andy, from whom Travis buys several handguns. At home, Travis practices drawing his weapons, and modifies one to allow him to hide and quickly deploy it from his sleeve. One night, Travis enters a convenience store moments before an attempted armed robbery, and he fatally shoots the robber. The shop owner takes credit for the deed, taking Travis handgun. Later, Travis encounters Iris again and hires her, but attempts to dissuade her from continuing in prostitution rather than having sex with her. He fails to completely turn her from her course, but she does agree to meet with him for breakfast the next day. Travis leaves a letter to Iris at his apartment saying he will soon be dead, and money for her to return home. After shaving his head into a mohawk, Travis attends a public rally where he plans to assassinate Palantine, but Secret Service agents notice him with his hand in his coat and chase him off. Travis flees and later goes to the East Village to invade Sports brothel. A violent gunfight ensues, and Travis kills Sport, a bouncer, and a mafioso; Travis is severely injured, sustaining multiple gunshot wounds. Iris witnesses the fight and, hysterical with fear, pleads with Travis to stop the killing. After the gunfight, Travis attempts suicide, but has run out of ammunition and resigns himself to lying on a sofa. When the police arrive, he places his index finger against his temple, pantomiming the act of shooting himself. Having recovered from his wounds and returned to work, Travis finds himself hailed as a local hero in the press for shooting the three men. He receives a letter from Iris father, thanking him for saving her life and revealing that she has returned home to Pittsburgh, where she is going to school. Later, Travis reconciles with Betsy when dropping her off at her home in his cab. When she tries to pay her fare, he smiles at her and turns off the meter. As Travis drives off, he suddenly becomes agitated after noticing something in his rearview mirror.