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

Sentence1: I am looking for Mediterranean food in the center of the city. Sentence2: I show 3 available. 2 are in the expensive range and 1 is cheap. May I book a table for you? Sentence3: Thanks for calling. You have a great day! Sentence4: I have booked you at the Shiraz Restaurant for 7 people Saturday at 15:45. Your table will be reserved for 15 minutes. Sentence5: I'd like the expensive range and I'd like to book a table for 7 people on Saturday at 15:45. Sentence6: Great. Thanks so much! Sentence7: Thank you so much. That is all I need today. Have a great evening. Sentence8: Sure. Your reference number is MSV3UPS2 . You will likely need it. Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: Could I get the reference number please? Sentence2: I have a table for 4 at 12:15 on Saturday at Curry Garden. Is there anything else i can help you with? Sentence3: You are welcome! Enjoy your visit! Sentence4: No that is all I do believe thanks for all of your help Sentence5: I am also looking for an Indian restaurant that is located in the centre? Sentence6: Yes your booking was successful and your reference number is Z7XFCSHU . Sentence7: Yes, can you please book a room for me for 4 people for 5 nights starting on Thursday. Sentence8: there is curry garden as well as eight other options for you. Sentence9: I'm looking to get some info about a hotel called Home from Home Sentence10: Home from Home is located at 78-80 Milton Rd. It's a 4 star hotel in the north part of town. Phone is 01223323555. Sentence11: Curry Garden sounds good, can you book me for 4 people at 12:15 on saturday? Sentence12: Your reference number is XDJE6L0H . Do you need anything else? Question: Who has spoken the sentence 11? (A) User (B) System
Answer: (B) System

Sentence1: Well thank you for calling. Sentence2: I'll take the hotel. Please book for 2 people starting on monday for 4 nights. Sentence3: There are two 3 stars in that area. One is a guesthouse and the other is a hotel. Would you like for me to make a recommendation? Sentence4: The price is 10.10. Can I help you with anything else? Sentence5: Booking was successful. Reference number is : XURZLO9G . Can i help with anything else? Sentence6: i would prefer 3 stars. Sentence7: No thank you but I do need to know the price. Sentence8: What is your price range? What number of stars do you prefer? 3 or 4? Sentence9: Can you help me find a place to stay in the south? Sentence10: I will be travelling on Friday and want to arrive at Stansted Airport by 13:34. Sentence11: I am seeing several options for you. Do you have a preferred departure time? Sentence12: Is there a train from cambridge that arrives by 13:45? Sentence13: Thank you for your time that is all I needed today. Sentence14: I found several trains that meet your criteria. Would you like to narrow your search by picking a particular day or a certain destination? Sentence15: No, as long as it arrives before 13:45 on friday, it's fine. Sentence16: I would recommend TR0188 which arrives by 13:08. Would you like to book a ticket? Question: Who has spoken the sentence 3? (A) User (B) System

Answer: (B) System