Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: Certainly! What day are you traveling? Sentence2: which side would you like to be? Sentence3: That's all I needed to know about the train. Thank you. I'm also looking for a moderately priced place to day with four stars. Sentence4: That sounds great. Please book it for 8 people for 4 nights, starting on Wednesday. Sentence5: Do you have a preferred arrival or departure time? Sentence6: You're welcome. Enjoy your trip! Goodbye. Sentence7: how about one that is in the cheap price range Sentence8: Booking was successful. Reference number is : Z01W0H74 . Is there anything else I can help you with? Sentence9: the area doesn't matter but make sure its a hotel and not a guesthouse including free wifi. Sentence10: That's all I need, thank you so much! Have a nice day! Sentence11: My meeting is on Wednesday. Sentence12: Can you help me find a train going to cambridge departing from norwich? Sentence13: Train TR2379 departs at 17:16 and arrives at 18:35. Will this work for you or would you like an earlier time? Sentence14: I would like to arrive by 19:30. Sentence15: I'm unable to find anything that meets all of your criteria. Can we adjust your price range to find the appropriate accommodations? Sentence16: How about The Cambridge Belfry? It is cheap, has four stars, and has internet. Shall I make a booking for you? Question: Who has spoken the sentence 8? (A) User (B) System
A:
Answer: (A) User