{"answers": "A", "options": ["m : thanks . you 're an excellent booking clerk . i hope i can enjoy my journey .", "m : thanks . you 're an excellent booking clerk . i hope i can enjoy your hotel rooms .", "m : thanks . you 're an excellent tour guide . i 'll enjoy my days in tokyo .", "m : thanks . you 're an excellent travel agent . i 'll enjoy my days in tokyo ."], "article": "m : good morning , two tickets to london , please . f : express train or regular one ? m : any difference ? f : the regular ticket is 80 dollars while price of the express ticket is 10 % higher . m : i see , but how long does the express train take ? f : comparatively , it can save you nearly an hour and the next one is leaving at 10:45 . m : oh , we only have 15 minutes to go . but that 's the time to catch the train . besides , as long as i get to london earlier , i do n't mind paying a little extra . f : and in preference for the seat ? m : a window seat would be perfect . i always love to enjoy the view outside while taking the train . f : no problem . here is your ticket , wish you a pleasant trip .", "id": "dev_12"}