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

Example Input: Sentence1: Where are you headed? Sentence2: anytime after 21:00. Sentence3: What time monday would you like to depart? Sentence4: okay, I do need the reference number also. Sentence5: Birgmingham New Street from Cambridge Sentence6: Yes will you book it for me ? Sentence7: I highly recommend Zizzi Cambridge in centere. It has excellent pasta and meatballs. Would you like me to book a reservation for you? Sentence8: Booking was successful. The table will be reserved for 15 minutes. Reference number is : DKSUCWY6 . Sentence9: Yes, on Monday for 2 people at 14:30. Olease give the reference number. Sentence10: thank you that will be all good bye Sentence11: I need 2 tickets and a reference number please Sentence12: My apologies, busy weekend and the system is lagging, you are set, reference number is B6SGLAAT total cost is 150.19 GBP, thank you for your patience. Sentence13: Have a nice day, goodbye. Sentence14: How many tickets will you need? Sentence15: Thank you so much, can you please also find me an Italian restaurant in the centre of town that's on the cheap side? Sentence16: TR8406 will depart at 21:40. Is that okay? Sentence17: I need a train on Monday leaving birmingham new street? Sentence18: Sure thing. I will work on getting this booked for you. Question: Who has spoken the sentence 10? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Kymmoy is in the centre of town and the phone number is 01223 311911. May I help you with anything else? Sentence2: Thank you, I have all I need. Goodbye! Sentence3: What is the phone number and area? Sentence4: Is there any expensive restaurants in town serving Australian food? Sentence5: You're welcome. Thanks for your call! Goodbye. Sentence6: Kymmoy is an expensive asian oriental restraunt in town. Sentence7: I'm sorry, there are no Australian restaurants. Would you like another type of food? Sentence8: How about asian oriental food? Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Okay! Would you like to stay in a guesthouse, or in a hotel? Sentence2: Ali Baba is a Lebanese restaurant in the centre. Would you like for me to book it for you? Sentence3: I am in the mood for Lebanese food. Sentence4: I'm not sure what time I need just yet. Can I get the postcode? Sentence5: How many people will be traveling? Sentence6: Sure. It's cb21nt. What else can I assist you with today? Sentence7: Great. Can you also get me a taxi to take me from Ali Baba to El Shaddai. I want to leave the restaurant by 05:30. Sentence8: Thank you for contacting us at Cambridge TownInfo Centre. Have a good trip. Goodbye. Sentence9: Your reservation for 6 at El Shaddai this Saturday for 6 days 5 nights was successful. Your Reference number is : 6NUZQ2BG . Sentence10: We have over 69 restaurants i the center of town. Do you have any food style or price preference? Sentence11: I just need one taxi. Can you book that for me, please? Sentence12: I'm also in need of a hotel in the same area as the restaurant. Sentence13: No, thank you. That was it for today. Thank you very much for your assistance. Have a good one. Good bye. Sentence14: I need to find a place to eat in the centre, thanks! Sentence15: I have the el shaddai that meets those requirements. Would you like to make reservations? Sentence16: I have booked you a taxi. The contact number is 07167504810, and it will be a black Honda. Anything else for you today? Sentence17: I'm gonna get wild this weekend, find me a zero-star guesthouse with free parking! Sentence18: Definitely! There will be 6 of us, arriving Saturday, and staying for 5 nights. Question: Who has spoken the sentence 17? (A) User (B) System
Example Output:
Answer: (B) System