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

[EX Q]: Sentence1: Let's go with the cheap one. I'll need a table for 7 on Sunday at 12:15 please. Sentence2: Can you try on saturday, 7 people, at 12:15 Sentence3: you're in luck I have two options for you. One is in the cheaper price range, the other is listed as moderately priced. Do you have a preference? Sentence4: Unfortunately the booking was not successful. Sentence5: Yes, you're booked for Saturday with reference number V54FG5X2 . The table will be reserved for 15 minutes. May I help with anything else? Sentence6: Thank you, goodbye! Sentence7: No, that's all I need. Thanks for your help! Sentence8: Yes I would like to find Spanish food in the center of town. Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Howdy, I'm looking for a place to stay. I don't care about internet. Sentence2: I booked you at city centre north b and b. Your reference number is Y87Q565O . Do you need anything else? Sentence3: How about the worth house? It is a 4 star guesthouse and has free internet and free parking. Sentence4: You are so welcome. Enjoy your stay in Cambridge. Sentence5: Would you like me to book it for you? Sentence6: There are 33 hotels in Cambridge. What price range would you like, and what area? Sentence7: Yes and make it for Friday for 2 days, and 2 people. Sentence8: yes I like that one with the free wifi. Sentence9: I would like a cheap hotel in the north please. Sentence10: Thank you so much for your help. Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Nope. That's everything I need today. Sentence2: Okay! What kind of restaurant would you like to dine at? Sentence3: I'm sorry there are no matches. Would you like me to try a different food type? Sentence4: What is the departure time? Sentence5: There are two options for Spanish food in the centre. One is moderately priced while the other is considered cheap. Which would you prefer? Sentence6: I guess I can do Spanish food, try to find something in the Centre area, please. Sentence7: How many tickets do you need? Sentence8: Sure, and what day would you like to travel? Sentence9: I am looking for a restaurant please. Sentence10: One that serves modern American food. Sentence11: it is booked here is your ref number 3OUG57S3 . Sentence12: I'd like the moderately priced one please. Sentence13: I don't need to book it, actually. But how long is the ride? Sentence14: It's a 105 minute ride. Sentence15: The TR7583 leaves at 6:09. Do you want to book it? Sentence16: The train should be on the same day as the restaurant booking and should depart from leicester. Sentence17: Can I get a table for 3 at 11:30 on Thursday? Sentence18: It's called la tasca. I'll need more information if you'd like to book a table. Sentence19: It departs at 06:09. Is there anything else I can help you with? Sentence20: I also looking for a train to Cambridge, arriving by 8:45. Sentence21: Does that arrive before 8:45? Sentence22: Yes, that will work out just fine. thank you Sentence23: yes it arrives at 07:54. is that fine with you? Sentence24: I am glad to help you from Cambridge TownInfo centre. Have a delightful visit. Goodbye. Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]:
Answer: (B) System