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 would you be departing from and when would you like to leave? Sentence2: There are four restaurants that serve British food near the centre that are moderately priced. Do you want more information on these restaurants? Sentence3: Actually, sorry. Do cancel the other booking because I didn't ask for it. Make the booking for 7 people on a train leaving after 15:45 from norwich to cambridge on tuesday Sentence4: What is your destination? Sentence5: No i will keep it Sentence6: i'm also looking for a train. Sentence7: Oh no! There no english restaurants that I can find right now. Would something else work? Sentence8: Okay thank you for calling. Sentence9: Glad to have been of help. Thank you for using the Cambridge TownInfo centre. Have a great day Sentence10: Im leaving Cambridge at 11:00 Sentence11: Your tickets have been booked. Your new reference number is 8XIKH0Z9 . Sentence12: it is called restaurant one seven and there phone number is 01223337766 Sentence13: Like I aid there are no listings for english food,another type of food? Sentence14: Actually, I am traveling on Tuesday. I need to leave after Norwich after 15:45. I need a booking for 7 people. Sentence15: nevermind, i'm going to cambridge not from it. i'm leaving from norwich Sentence16: I'm looking for a local restaurant to dine at that serves english food and is moderately priced. Sentence17: Yea can you recommend one and get my the phone number please? Sentence18: Perfect. Sorry about all the confusion and thanks for your help. Have a great day. Sentence19: I have booked you on TR8662 which leaves Norwich at 11:16 on Friday and takes 79 min to get to Cambridge for 17.60 pounds. Reference R42CEKG8 Sentence20: Are there any restaurants that serve british food? Sentence21: So you want to cancel the other booking? Sentence22: I'm looking for something with a moderate price range near the centre. 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: There are 7 museums in the west part of town. All but one are free to enter. Do you have any further criteria? Sentence2: Thank you very much. That's all I'll need today! Sentence3: Your reference number for the restaurant reservation is QT2C8PNF . Can I help you with anything else? Sentence4: Yes, I would like reservations for four for seven o'clock tomorrow evening. Sentence5: Their phone number is 01223312112 Sentence6: Sure thing, may I have their phone number? Sentence7: It needs to be in the west. Sentence8: Could I get the reference number for that booking please. Sentence9: Actually can I get reservations for 7 at 20:00 on Friday? Sentence10: How about an expensive restaurant in the west serving European food? Sentence11: Yes, please. Do you have their phone number? Sentence12: I also need a seafood restaurant that is in that same area Sentence13: No problem. I have you booked on Friday at 20:00 for 7. Anything else I can help you with? Sentence14: Would you like to visit cafe jello gallery? It is in the west with free entrance. Sentence15: Sorry, looks like there are no restaurants in the area with those requirements. Sentence16: Ok then. Goodbye. Sentence17: Yes. I would like a taxi to take me to the restaurant by my reservation time. Sentence18: I'm sorry that booking was unsuccessful, would you like to try another time or another day? Sentence19: The Cambridge lodge restaurant fits all your criteria. Can I book a reservation for you? Sentence20: Can you tell me if there are any museums in the west part of town? Sentence21: Booking for your taxi was successful. The contact number is 07760432022 and the care will be a white volvo. Sentence22: Will you be heading to the restaurant directly from Cafe Jello Gallery? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output:
Answer: (A) User