Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: Does it have four stars? Sentence2: No I would like to stay in the centre. Can you recommend a cheap one in that area instead? Sentence3: Great. Thanks so much. Can you also get me a taxi from the Alexander B&B to Dojo Noodle Bar and get me there by 11:00? Sentence4: The address is 56 Saint Barnabas Rood, and they do have free parking. Sentence5: I don't have a preference for food type. I do need reservations for 8 at 12:00 on thursday. Sentence6: The City Room Hotel meets your requirements. Do you need the phone number? Sentence7: The Alexander Bed and Breakfast has 4 stars and is within your price range. Would you like me to book that for you? Sentence8: Booking completed! Booked car type : grey toyota Contact number : 07149685492 Sentence9: I'm sorry, it only has 0 stars. Would you like to try a different part of town? Sentence10: Yes, how about 11:00 instead? Sentence11: There are over 110 entries that fit the area and price range, what food type did you have in mind? Sentence12: Okay you have reservations at dojo noodle bar and your reference number is WJJDIBTF . Sentence13: That booking was unsuccessful. Could you do another time? Sentence14: I'm looking for a moderate place to stay in the centre. Sentence15: what their address? do they have free parking? Sentence16: Thank you and enjoy your visit to cambridge. Have a great day. Sentence17: Ok, thank you, that will be all. Goodbye Sentence18: Great can I also find a restaurant in the centre of town in the cheap price range? Question: Who has spoken the sentence 2? (A) User (B) System
Output:
Answer: (A) User