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

Sentence1: Yes sir! Soul tree nightclub is a good one. they are at 8 market passage, postal is cb23hx and phone number is 01223519224, is there anything else that I can assist with? Sentence2: Pick a good one for me. I need the phone number and postcode for it too. Sentence3: Sala Thong is an expensive Thai place in the west. They're located at 35 Newnham Road, cb39ey. Sentence4: Can't wait to come party at one of your nightclubs in town. Sentence5: There are 5 nightclubs in the centre and one in the south. Would you like more information on one of them? Sentence6: Thanks, that is all for today. Goodbye. Sentence7: You're welcome, have a good day. Sentence8: Can you give me information on a restaurant called Sala Thong? Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

Sentence1: I think you'd like TR8842 train, it costs 23.60 pounds. Sentence2: Thanks, it would be helpful if you also told me what time TR8842 leaves. Anyhow, I just got paid. Can you find me a high-end eatery serving European cuisine? Sentence3: No thank you. I'll just need the address for an expensive restaurant that serves European food. Sentence4: Train TR8842 leaves london kings cross at 15:17 on friday and arrives at cambridge at 16:08. Can I provide you more information or book it for you? Sentence5: Arrival time is not important. I just need to leave after 14:15. I will need the train ID and the price, please. Sentence6: Sorry! As I said, it's at Free School Lane City Centre. Can I help you with anything else? Sentence7: Hi, could you help me find a train going to Cambridge? Sentence8: Is there a time you would like to arrive by? Sentence9: Where and when are you departing from? Sentence10: I would like to leave on Friday Sentence11: No, that's it. Thank you. Sentence12: which side of town is most appropriate for you? Sentence13: Have a lovely day, goodbye. Sentence14: I am leaving from London Kings Cross after 14:15. Sentence15: I'm sorry, but I think you gave me the phone number. I need the address, please. Sentence16: I don't have a preference really, please recommend one. Sentence17: no. i just need the address Sentence18: What day would you like to leave? Sentence19: its address is 01223368786. is that it? Sentence20: How about the eraina located at Free School Lane City Centre. Would you like reservations? Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: Can you help me find a place to eat called sala thong? Sentence2: The train is TR0032, it departs at 10:09 and travel time is 105 minutes. How many tickets do you need? Sentence3: I'm sorry, there's nothing available at that time. Could you perhaps do a different time? Sentence4: As for now, just one please. Sentence5: That's everything. Thanks! Sentence6: Please make a booking for people at 19:00 on monday. I also need a reference number once booked. Sentence7: Well, I'm also looking for train on Monday departing from Leicester to Cambridge arriving by 12:45. Sentence8: Booking was successful, the total fee is 37.79 GBP payable at the station. Reference number is : 3KP0ATIS . Anything else I can help you with? Sentence9: I have a train that arrives at 11:54. Would you like me to book that for you? Sentence10: That was unsuccessful as well, do you have another time? Sentence11: Absolutely! They are a great thai restaurant in the west of town. They are located at 35 Newnham Road, Newnham. Did you need help reserving a table or any other info? Sentence12: Sure, try a time that would work. Maybe 20:00? Sentence13: My pleasure. Please call again if there is anything we can do to help. Sentence14: Yes I also need the train id, departure time and travel time. Question: Who has spoken the sentence 11? (A) User (B) System

Answer: (B) System