You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: I think that is all I need, thank you. Good bye. Sentence2: I can recommend a museum for you. First, was there a particular area of town you wanted to visit? Sentence3: I am open to suggestions on the location. Sentence4: I'm looking for museums Sentence5: Booking was successful, the reference number is FDCBUD77 the table will be held for 15 minutes, anything else that I can assist with? Sentence6: I was unable to book at that time. would you like to try another time? Sentence7: I am on a tight budget so would prefer something in the cheap price range. Sentence8: The cafe jello gallery is a museum in the west of town. Sentence9: I'm happy we were able to help you today. Enjoy your time in Cambridge! Sentence10: Do you have a preference for the price range? Sentence11: Can you recommend an Italian restaurant in the centre as well? Sentence12: Yes, can you try to book at 17:45? Sentence13: zizzi cambridge is in the cheaper range, how does that sound? Sentence14: That sounds perfect. Can you book me a table for 3 on Thursday at 18:45? Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System