Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: Yes, that would be fine. I don't need tickets, I just need the travel time, price, and train ID. Sentence2: I need a train that is headed to london kings cross and i need to arrive by 20:30. Sentence3: Thank you! I also need to find a moderately priced restaurant in the centre of town. Do you have any suggestions? Sentence4: That's all I need assistance with today. Thank you. Sentence5: The train id is TR0427, it leaves cambridge at 19:00 and arrives at london kings cross at 19:51. The cost is 18.88 pounds. May i be of further assistance. Sentence6: The TR8134 leaves at 17:00. Will that be okay? Sentence7: sure, where are you headed? Sentence8: I can help with that. What day will you be travelling? Sentence9: Unfortunately, I am unable to book at this time. Sentence10: I will be leaving Saturday. Sentence11: I need to book train tickets. Sentence12: There are quite a few to choose from. Do you have a cuisine preference? Sentence13: Thank you for your time. Sentence14: Sure! It will be 7 people at 16:00 on saturday. Please give me the reference number. Sentence15: I was able to reserve a spot for you at Restaurant One Seven. Here is your reference number, 3HSTWXS7 . Sentence16: No but I need it for 7 people on the same day. Sentence17: the oak bistro is a moderately priced british restaurant in the centre. Would you like me to complete a booking there? Sentence18: i would like to leave at 16:20 Sentence19: We have 8 trains to London Kings Cross that day. Is there any particular time you'd like to leave by? Sentence20: You are welcome enjoy. Question: Who has spoken the sentence 10? (A) User (B) System
Output:
Answer: (A) User