You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: I will be going to ely. Sentence2: Anything else you need? Sentence3: Yes, please book it for me. Sentence4: I need the post code and attraction type of all saints church please. Sentence5: Yes that sounds like a great place to visit. Sentence6: I need a train that leaves cambridge on monday after 09:15 Sentence7: That's all I need today. Thanks! Sentence8: Yes, that will be sufficient. Sentence9: The attraction type for All Saint's is architecture and the postcode is cb58bs. Is there anything else I can help you with? Sentence10: You're welcome. Have a great day. Sentence11: Where will you be going? Sentence12: On second thought, a booking will not be necessary now. The train ID you supplied is sufficient. I am looking for places to go while I'm in town. Sentence13: TR8399 leaves Cambridge at 09:50 and arrives by 10:07, does this suit your needs? Sentence14: No problem. What type of attraction are you interested in? There is lots to do here. Sentence15: It doesn't matter what type, you pick! Sentence16: I will work on that now and be back with you in a moment. Sentence17: all saints church is located in the town centre. its very popular this time of year. wou.d this work for you? Sentence18: Would you like me to book this for you? Question: Who has spoken the sentence 6? (A) User (B) System
A:
Answer: (A) User