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

Example Input: Sentence1: Thank you for the help, have a nice day. Sentence2: Hi, kohinoor is a cheap Indian restaurant, but doesn't specify that it is South Indian. Would you like the phone number? Sentence3: There are 8 trains that will arrive by 21:45. What time would you like to depart? Sentence4: how about 17:00. Sentence5: Great! I am also looking for a train that leaves on thursday and departs from cambridge. Sentence6: Hi, I'm looking for a place to eat, preferably a cheap South Indian restaurant. Sentence7: How many tickets do you need? Sentence8: Yes, that would be great. Could I get a reference number please? Sentence9: Is it in the centre of the city? Sentence10: Would you like for me to book a table at Kohinoor for you? Sentence11: What's the last train to arrive by 21:45? Sentence12: Yes, it is indeed in the centre. The phone number is 01223323639 Sentence13: Destination is Stevenage. I would like to arrive by 21:45. Can you book the train for me as well? Sentence14: It would be the one leaving at 19:21 and arriving at 20:10. Shall I book it? Sentence15: I need 1 ticket. Sentence16: Booking was successful, the total fee is 12.8 GBP payable at the station . Reference number is : 5TM8STAM . Sentence17: What is your destination? Sentence18: Yes, please. 18:00 on Wednesday for just myself. Sentence19: I'm sorry, they're all booked up at that time. Would you like to try a different time? Sentence20: It was a pleasure to serve you have a great day Sentence21: I was able to book that, your reference number is HEJFVRPP . Sentence22: Ok, thank you. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: How about the Alexander bed and breakfast in the centre? It is a cheap 4 star guesthouse with free internet and wifi. Sentence2: That sounds like it might work. Could you check availability for two people this weekend? Sentence3: Does this place include free parking? Sentence4: I am unsure at this time. Sentence5: I am glad to help. Have a nice day. Bye. Sentence6: I live in the centre of town and want to see if I can find a reasonable room for my parents to stay while they are visiting. Sentence7: Okay, would you like some more information about that hotel? Sentence8: You have been very helpful. I have everything I need, thanks. Bye Sentence9: The address is 56 saint barnabas road. Sentence10: What day are they arriving, and how many nights are they staying? Sentence11: The alexander bed and breakfast is a cheap, 4 star guesthouse in the centre area, It has wifi and parking. Does this fit your needs? Sentence12: Can you tell me what the address is? Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Ok, can you give me the phone number and address please? Sentence2: No that's all, thanks! Sentence3: Yes, I was looking for a particular attraction, Saint Catharine's College. What area is it located in? Sentence4: You're welcome! Have a great day! Sentence5: There are 11 places that meet those critieria. Are you looking for a particular star rating? Sentence6: Can you book a room as well? Sentence7: Your rooms have been booked for Monday. The reference number is JJK77QKA . Is there anything else I can do for you? Sentence8: I would like to stay in the north I have a moderate price range. Sentence9: It is located in the centre. Admission is free. Sentence10: What price range and what area are you looking for? Sentence11: I would suggest acorn guest house. Sentence12: Yes, I would like something with a 4 star rating, and I would like for it to be a guesthouse. Sentence13: Yes, what day would you like? Sentence14: I'm looking for a place to stay during my upcoming trip to Cambridge. Sentence15: I would like it for 3 people and 3 nights starting on Monday please. Sentence16: saint catharine's college address is king's parade. Their phone number is 01223338300. Is there anything else I can do for you today? Question: Who has spoken the sentence 14? (A) User (B) System
Example Output:
Answer: (A) User