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

Sentence1: Thank you so much. That is all I will need today. Sentence2: Great, how many tickets would you like to purchase? Sentence3: That would be perfect! Sentence4: I am looking to go from cambridge, and go on friday arriving by 14:30 Sentence5: Okay, how about the TR5901 leaving at 13:34 and arriving at 14:24 with a duration of 50 minutes? The cost is 16.50 pounds. Would that work for you? Sentence6: There are 266 trains going to Peterborough. Can you give me a departure day and time so that I can narrow down your choices? Sentence7: Your tickets are all booked, reference number R5P65TW5 Sentence8: I'd like to find a train to peterborough. Sentence9: Thank you for contacting Cambridge TownInfo centre. Have a wonderful day! Sentence10: 7 tickets please. Can I also have the reference number for the booking? Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: Thats all for today! Thanks so much! Sentence2: TR1039 departs from Ely at 13:35, arriving in Cambridge by 13:52. Does this work for you? Sentence3: Sounds great, can you book it for 7 people for 4 nights starting saturday? Sentence4: The location doesn't matter, but I'd like it to be 4 stars. Sentence5: Thank you I also need to find a cheap guesthouse to stay at. Can you help me find one? Sentence6: Hi, I'm looking for a train going to Ely from Cambridge. Sentence7: Have a nice day. Sentence8: Okay! How about Allenbell? Sentence9: That sounds great. I would like to book it for 7 people. I will also need the reference number Sentence10: You have 9 options available. Would you like to narrow it down by location? Sentence11: Your room has been booked. Your reference number is ELA3CIDM . Sentence12: There are 70 possible trips. You can leave as early as 5:35 and as late as 23:35. The trip is 17 minutes. What time of day would you prefer? Sentence13: I need to leave on Wednesday after 12:00 please. Sentence14: Booking was successful, the total fee is 35.2 GBP payable at the station .Reference number is : JD1P380X . Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System

Sentence1: Please make a suggestion and provide the postcode, address, and phone number. Sentence2: dojo noodle bar is a nice restaurant in the centre of town, it serves asian oriental food. Sentence3: What criteria are you searching for concerning dining? Sentence4: Yes, the TR6633 leaves at 21:11 and arrives by 21:58. Would you like me to make a reservation for you? Sentence5: The hotel du vin and bistro is my favorite. Address is 15 - 19 Trumpington Street cb21qa, phone 01223227330 Sentence6: I looking for a restaurant in centre. Sentence7: Your train is booked, the total fee is 31.36 GBP payable at the station and the reference number is : 63QMG2XO . May i help you with something else? Sentence8: great, i have 4 options for you to choose from! Sentence9: yes please. book it for four people and send me the reference number. Sentence10: Is that restaurant moderately priced? Sentence11: I'm also looking for a train that leaves after 20:15 on Saturday. I need to go to Kings Lynn from Cambridge please. Do you have anything? Sentence12: I'm looking for a moderately priced European restaurant located near the centre? Question: Who has spoken the sentence 2? (A) User (B) System

Answer: (A) User