Sentence 1: Dale and Becky took a passenger train across the country. 
 Sentence 3: The swaying of the dining car made Becky feel sick to her stomach 
 Sentence 4:  She went back to her seat in the passenger car 
 Sentence 5:  After she ate a few crackers, Becky felt better 
 Given Sentence 2: He was schmoozing the crowd while he decided to take a seat.