Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: I will be leaving from Cambridge on Sunday after 19:30. Sentence2: Can you suggest some good architecture attractions? Sentence3: The phone number is 01223332360. Is there anything else I can help you with? Sentence4: Can I ask where you are leaving from? Sentence5: What day will you be traveling? Sentence6: I will be leaving Sunday after 19:30. Sentence7: Yes. I am looking for places to go on the west side of town. Sentence8: I need a train to Ely, please. Sentence9: I think that is all I need. Thank you for your help. Goodbye. Sentence10: I have train TR3544 leaving at 19:50 and arriving by 20:07. Would this work for you? Sentence11: Unfortunately, I'm not showing any architecture attractions in the west area. Would you like me to look in another area? Sentence12: OK. Can I help you with anything else today, then? Sentence13: What type of colleges are available? Sentence14: No need to book it. Sentence15: There are five colleges on the west side. Churchill college, Clare hall, and Magdalene college all have free admission. Do any of those interest you? Sentence16: Yes I have many colleges there. Can I suggest something for you? Sentence17: Clare Hall sounds like it would be nice. Can I get their phone number please? Sentence18: It was a pleasure to assist you. Thank you for using our service. Goodbye. Question: Who has spoken the sentence 2? (A) User (B) System
Answer: (A) User