{"answers": "A", "options": ["m : i think i have to take the flight on sep.20 .", "m : i would like to sell my ticket for sep.16 since i have already had one .", "m : so i have to take the train on sep.16 .", "m : i think i have to take the flight on sep.20 . since sep.19 is too early for me ."], "article": "m : well , i 'd like to cancel my reservation for the flight on september the sixteenth and book one on september the ninteenth instead , please . f : ok , wait a moment please . sorry , they 're all sold out but there 's only one left first class on september the twentiethth .", "id": "train_6863"}