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: Alexander B and B is one of our higher rated guesthouses in the centre of town. It is 4 stars, but is surprisingly cheap. Can I get you any specific information? Sentence2: I need to know more about the Alexander bed and breakfast. Sentence3: I would like to make a booking for book it for 5 people and 3 nights starting from wednesday. Sentence4: It's an expensive Indian restaurant in the west part of town at 31 Newnham Road Newnham. Their phone number is 01223461661. Your reference number is 1ETONEKW . Sentence5: Thank you that is all I need today. Sentence6: Great. Thanks for all your help! Sentence7: Yeah, anytime let us know if you need anything else. Sentence8: I need information on India House, a restaurant. I need to book for 5 people at 16:45 for Wednesday, please. Sentence9: Happy to be of service. Enjoy your meal and your time in Cambridge! Sentence10: Yes, I can book it now. Sentence11: Hi, I'm the supervisor, I have taken over for the rep, my apologies, you booking is set, the reference number is VY2TZJWT . Can I help with anything else? Sentence12: Is there a reference number associated with the booking? Question: Who has spoken the sentence 2? (A) User (B) System
Answer: (A) User