Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Great. Thank you for all your help. Sentence2: Can you help me find a train out of Cambridge that leaves after 10:30? Sentence3: That train does not travel on Sunday, but TR8464 leaves at 11:21 if that will work for you. Would you like me to book you a ticket? Sentence4: Just give me the postcode please and tell me if they offer parking Sentence5: I sure can! The TR1502 leaves at 11:00. Would that work? Sentence6: The total fee is 71.68 GBP payable at the station . Reference number is : DSIQUE20 Sentence7: I recommend the Lensfield Hotel. It is 3 stars. Would you like to make a booking. Sentence8: Well yeah, I would need the reference number if you booked it? Sentence9: The hotel does offer parking and the postcode is cb21en. Sentence10: Thank you. I'm also looking for a hotel in the south area of town. It needs to be a hotel. Can you recommend any? Sentence11: Yes, that will work for me. Can you please make a booking for 7 people? Sentence12: You're welcome. Thank you for calling the Cambridge TownInfo Centre. Have a great day! Sentence13: I am looking to travel Sunday going to Stevenage. Does that train travel on that day? Sentence14: Yes,I will book it for 7,is there anything else I can do for you ? Question: Who has spoken the sentence 1? (A) User (B) System
A:
Answer: (B) System