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

Example Input: Sentence1: The Lensfield does have free wifi. Their phone number is 01223355017 and their postcode is cb21en. Sentence2: First, can you give me the phone number, postcode, and tell me if they have internet? Sentence3: Is it a guesthouse? I'd really like a guesthouse with 3 stars, if possible. Sentence4: That is perfect, thank you for your help. Goodbye. Sentence5: Unfortunately, I can't find a 3-star expensive guesthouse with free parking. Would you like me to find something else? Sentence6: Sure, The Lensfield hotel is in the south. It is very nice, can I book it for you? Sentence7: Express by Holiday Inn Cambridge is an expensive hotel with free parking. Their phone number is 01223866800. Sentence8: I'm looking for an expensive place to stay with free parking please. Sentence9: Let us know if you have any more questions! Sentence10: How about a hotel instead of a guesthouse? Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: You're welcome. Can I help you with anything else? Sentence2: That is all. Thanks Sentence3: The post code is CB11JG. Sentence4: Thank you, what's the post code? Sentence5: Thank you for your help Sentence6: Cambridge, parkside police telephone number 01223358966. Sentence7: I need to get to the nearest police station, can you assist me? Sentence8: Okay. Have a good day and thanks for using our system. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: There are three Chinese restaurants in the north part of town. What price range would you like? Sentence2: I am looking for a restaurant in the north part of town serving persian food. Sentence3: Golden Wok is a chinese restaurant located in the north part of town, and the phone number is 01223 350688. Sentence4: The Hakka also serves Chinese food and is on the north side of town. Their phone number is 01223 568988. Is there anything else I can help you with. Sentence5: Thank you for using our system. Good bye Sentence6: There aren't any restaurants serving Persian food in the north part of town. Would you like me to look in a different area? Sentence7: There are three restaurants that serve Chinese food in the north part of town. Would you like me to list them? Sentence8: Are there chinese restaurants in the north part of town? Sentence9: Any price range would be fine. Sentence10: Please provide a phone number for one of the restaurants. Sentence11: Can i have the phone number to one more restarant please? Sentence12: No, thank you. That is good. Good bye. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output:
Answer: (B) System