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

Example Input: Sentence1: Yes, can I get a table for 4 on saturday at 15:15? Sentence2: Hi! Can you help me find a particular restaurant? Sentence3: unfortunately they are filled up for that time would you like me to reserve another time or would you like to choose another restaurant. Sentence4: Of course, there are 110 restaurants in town. Would you like me to search by restaurant name? Sentence5: The Varsity Restaurant serves international food in the center of town. Do you want me to book it for you? Sentence6: Excellent. I'll need the reference number. Sentence7: Yes, I am looking for the Varsity Restaurant. Sentence8: Yes, I will book a table for 4 on Saturday at 15:15. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Goodbye. Sentence2: Nandos sounds great. Thank you. Sentence3: Goodbye. Sentence4: thank you good bye Sentence5: Yes, I'd like a restaurant that serves portuguese food. Sentence6: nandos is the only restaurant i can find in the south that serves portuguese. Sentence7: Hi. I'm trying to find a good restaurant in the south part of town. Sentence8: There are several good restaurants in the south part of town. Do you have a preference for the type of food or price range? Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Yes, most likely. Can you provide me with the postcode of the hotel please? Sentence2: Thanks! Sentence3: Hi, I'm looking for an upscale hotel. Could you recommend me anywhere in the west part of the area? Sentence4: Does it have a star of 4 and free parking? Sentence5: Huntingdon Marriott Hotel is available in the west part of town and looks upscale. Sentence6: Yes, the postcode is pe296fl. Is there anything else I can do for you today? Sentence7: Yes. Would you like to book a room? Sentence8: Thanks, that will be all. Question: Who has spoken the sentence 3? (A) User (B) System
Example Output:
Answer: (B) System