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

Example Input: Sentence1: Booked! You leave at 13:17, your reference number is 3WICPFQP, you will pay 141.6 at the station. Sentence2: I am looking to book a train. Sentence3: Could you tell me your location, which area of town or what business you are departing from? Sentence4: Certainly. May I ask where you want to depart from? Sentence5: I need to depart from London Kings Cross and go to Cambridge. Sentence6: We are leaving London Kings Cross and need to do so after 12:45 on Friday for 6 people and can I get the reference number for the booking? Sentence7: Okay thank you. That is all I need. Sentence8: Okay thank you for calling. Sentence9: I would like to leave from the closest station to my location. Sentence10: To clarify, are you looking for a train to Cambridge? All Friday trains from London Kings Cross go to Cambridge. Question: Who has spoken the sentence 8? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: We have 13 trains meeting your criteria. Do you have any idea how early you want to leave? The first train leaves at 11:32 and then every hour after that Sentence2: Are there any cheap options in the centre of town? Sentence3: We can take care of that too, but let's get your restaurant squared away first - in order to provide an address I'll need to know what type of cuisine? Sentence4: Whichever one you think is best please. Sentence5: to cambridge from broxbourne. i need to leave after 11:15 please Sentence6: Where will you travel too and from? Sentence7: Thank you for using the Cambridge TownInfo centre. Goodbye. Sentence8: excellent. I will need the train booked for 5 as well. Sentence9: It has been booked. You reference number is UCICW103 . Sentence10: I recommend the Dojo Noodle Bar. They're located at 40210 Millers Yard, City Centre. Sentence11: I will be traveling on Sunday. Sentence12: Hi. Can you help me find a restaurant? Sentence13: and what day will you be traveling on? Sentence14: The train should leave broxbourne after 11:15 so the 11:32 is a good choice. There are 5 of us traveling together. Please book. Sentence15: There are a lot of options in Cambridge. Can you please be more specific? Sentence16: Yes, there are chinese, asian oriental, indian, italian, spanish, portuguese, modern europe, and mediterranean available. Sentence17: Great. Thank you so much. Sentence18: Can I have the address? I am also looking for a train that leaves on Sunday to Cambridge. Question: Who has spoken the sentence 16? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Okay, how about a booking for 1 night? Sentence2: Unfortunately, they do not have availability for that long a stay. Would you like to try for a shorter stay or different day? Sentence3: No thank you that's all the information I need today. Sentence4: I was able to book 1 night at hobsons house for Friday. Your reference number is R87K52QJ . Sentence5: Alright then. Goodbye. Sentence6: I found four hotels do you have any other requirements? Sentence7: You're welcome! I hope you enjoy your stay in Cambridge! Goodbye. Sentence8: Hobsons House matches your preferences. Would you like me to book a room? Sentence9: Actually, I'm not quite done. Would you please book the hotel for 8 people, 4 nights? We'll be arriving on Friday. Sentence10: Hi! Can you help me find a hotel somewhere on the west side of town please? Sentence11: Thank you very much. That is all I need! Sentence12: Yes, the hotel should include free wifi. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output:
Answer: (B) System