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

[EX Q]: Sentence1: The area doesn't matter. I would like free wifi though, if possible. Sentence2: Not really, how about 4 star? Sentence3: Do they also have free parking? Sentence4: I have many options. Do you have a preference for the area you would like to stay in. Sentence5: There are several moderate 4-star places to stay throughout town, but they are all guesthouses. Would a guesthouse work for you? Sentence6: acorn guest house does have free parking,would you like that one? Sentence7: Dojo Noodle Bar is a nice cn I book you a table ? Sentence8: I'm looking for a moderately priced, 1-star place to stay. Sentence9: No, I don't need a hotel booking at this time. I'd like to find a place to dine on Sunday. Sentence10: Unfortunately we do not have any moderately priced 1 star hotels in Cambridge. I'm sorry! Cityroomz has 0 stars in the centre, does that work? Sentence11: Would you like me to reserve the acorn guest house for you? Sentence12: Yes. I also need to find a place to dine that is in the center and the same price range as the hotel. Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: It doesn't matter, I just need to get there. Sentence2: I am sorry but that time is not available. Would you like to try another time or day perhaps? Sentence3: There is a restaurant called restaurant alimentum that meets your criteria. Sentence4: It's all booked, you're looking for a black volkswagen and their contact number is 07263669645. Sentence5: As a matter of fact, it appears all of the gastropubs in Cambridge have closed. Is there anything else that interests you? Sentence6: Have a great day! Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 8HB62Z6W . Is there anything else I can help you with? Sentence8: Sure. What time would you like to leave the restaurant? Sentence9: I am looking for a gastropub in the south. Sentence10: The address is cambridge leisure park, clifton way. Can I do anything else for you? Sentence11: Yes, I'd like to see some entertainment near the restaurant. Could you recommend me something good? Sentence12: Are there any Gastropubs in town? Sentence13: Yes, it is. Nusha is in the South as well. Sentence14: Yes, I would like to book a taxi from the restaurant to the entertainment. Sentence15: How about Tenpin in the south? Sentence16: Great, thank you so much for your help! That's everything I'll need today! Sentence17: Thank you for contacting Cambridge TownInfo centre. Goodbye! Sentence18: That will do. Please get me their address. Sentence19: How about a modern European cuisine in the south area? Sentence20: Let's book that for 12:45 on Tuesday. It will be for 7 people. Sentence21: I'm sorry I couldn't find any Gastropubs in the South. Is there another type or area which you would like to try? Sentence22: Splendid! Thank you for all your help. That's all I need. Goodbye. Sentence23: Could you try 11:45 please? Sentence24: Is it located near Alimentum? I'm looking for something in the same area as the restaurant. Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: There are not any with wifi. Would you like me to checked higher rated options? Sentence2: No, thanks. Are you sure you can't find 1 star hotels? Sentence3: Hello, could you tell me if there are any 1 star lodging establishments that offer free wifi? Sentence4: No. I don't have a price preference. Sentence5: no that will be all. Sentence6: All right. Thank you for the Cambridge TownInfo Centre. Have a nice day. Good bye. Sentence7: Can I look up anything else for you today? Sentence8: I need a train on the same day leaving Cambridge Sentence9: In that case, I would recommend alexander bed and breakfast. Sentence10: What about 4 star hotels? Sentence11: Okay, from where? Sentence12: Your booking was successful, your reference number is: VZPWHWLV . Is there anything else I can assist you with today? Sentence13: Yes, there are quite a few. Did you have a particular price range in mind? Sentence14: Okay! Where are you going? Sentence15: That sounds great can you book it for 7 people? We're staying 3 nights and want to check in Wednesday. Sentence16: No thank you that will be all Sentence17: I'm sorry, I double checked but there are not any 1 star rated hotels available. Can I help you find something else that may be suitable? Sentence18: i am going to cambridge Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]:
Answer: (A) User