Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: Are there anything fun to do in city centre? Sentence2: Booking was successful, the total fee is 24.64 GBP payable at the station, you reference number is NUECBTHH . Will that be all? Sentence3: My favorite attraction in the centre of the city is a concert hall called Man on the Moon. It is amazing! They are at 2 Norfolk Street. Sentence4: cb12lf. Is there anything else you need? Sentence5: That's it. Thank you. Sentence6: I need to find a train that leaves on Saturday and arrives by 08:45 Sentence7: Can you tell me what your departure city and destination are? Sentence8: You're very welcome! Have a great day! Sentence9: Yes, can you book that for 7? Sentence10: what is their postcode? Sentence11: I'll be leaving Cambridge to get to Ely. Sentence12: TR5344 arrives by 7:50. Does that work for you? Question: Who has spoken the sentence 6? (A) User (B) System
A:
Answer: (A) User