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

Ex Input:
Sentence1: It does not matter, I just need one available for 7 people at 18:15 on thursday Sentence2: I'm sorry, nothing is coming up for that particular type of restaurant. Is there any other specifics you may like? Sentence3: The reference number is DVDLH9NK . Is there anything else I can help you with? Sentence4: Unfortunately I could not find any guesthouses meeting those requirements. Sentence5: How many stars is Cityroomz? Sentence6: Before I can book your taxi, what time are you wanting to leave or arrive by? Sentence7: Fantastic. Enjoy your trip! Sentence8: Not yet. I would like you to book a taxi for me between my hotel and restaurant. I will need the car type and contact number. Sentence9: It has a zero star rating, is this ok? Sentence10: I also need the reference number please. Sentence11: I just want to be sure it arrives by the booked time at the restaurant. Sentence12: Cityroomz is the only place that matches your criteria. Sentence13: That is fine. Do they have internet? Sentence14: I have made a reservation at restaurant alimentum for you. Your table will be reserved for 15 minutes. The address is 152 - 154 Hills Road. Sentence15: How about one that serves modern european food? Sentence16: Thank you very much for your help! That was everything I needed. Sentence17: How about a hotel type? Sentence18: There are 3 restaurants serving modern european food, would you prefer one on the south side or town centre? Sentence19: Yes, Cityroomz has internet. Would you like to book it? Sentence20: Booked. Your car type is white skoda and contact number is 07075801794 Sentence21: Can you find me restaurant with moderate prices that serves north indian cuisine? Sentence22: Yes, I also need a guesthouse hotel with moderate prices in the centre. I don't need free parking. Question: Who has spoken the sentence 15? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: We have nine expensive dining establishments on the west side. Cuisines offered are Thai, Indian, European, and British. Do you have a preference? Sentence2: Thank you. Can you please give me the reference number? Sentence3: The reference number is 5WHDPGHW .. Is there anything else I can assist you with? Sentence4: Okay I booked a table for 4 at 15:00 on Saturday at the Graffiti, an expensive British restaurant in the west area of town. Sentence5: I am interested at eating at an expensive place in the west part of town. Sentence6: No that will be all. Thank you so much for all of your help! Sentence7: Excellent. Have a good rest of your day! Sentence8: No I don't have a preference. I want to book for four people at 15:00 on Saturday. Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Thank you for using our service today, and have a wonderful stay in Cambridge! Sentence2: Are there any hotels in the same price range? Sentence3: Yes, in west Cambridge. Sentence4: I cannot find anything in cambridge. Sentence5: Can you find me a 3 star hotel with free wi-fi? Sentence6: What day are you beginning your stay? How many days and how many people do you want to make a booking for? Sentence7: I need it for 4 people for 4 nights starting Monday please. Sentence8: yes, please and be sure to provide me the booking number, thank you. Sentence9: That will be all. Thank you for your help. Sentence10: I found Hobsons House guesthouse in the west. It is a 3 star moderate and has free internet. Can I book it for you? Sentence11: The lensfield hotel is expensive and has a 3 star rating. Sentence12: The Hobson in not open, but I have the Hamilton open, would you like me too book it, it fits the same criteria. Sentence13: I have 3 guesthouses all in the moderate price range. Is there a particular area you wish to stay in? Sentence14: Is there a guesthouse available? Sentence15: Yes please and I need the reference number Sentence16: Great. You're all booked and your reference number is UMRJOUWZ . Anything else I can do for you? Question: Who has spoken the sentence 11? (A) User (B) System

Ex Output:

Answer: (B) System