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

[EX Q]: Sentence1: Don't worry, I should be able to help you. Do you know which station you'll be leaving from or going to? Sentence2: What is your destination? Sentence3: Hi, I am trying to plan a trip and need some help with a train. I'm not familiar with trains at all unfortunately. Sentence4: I'm departing from leicester and I need to leave on friday. Thank you for helping! Sentence5: I also need a place to stay. Sentence6: 11 pm and I want it for three people Sentence7: I'm going to Cambridge. Sentence8: We have many great places to stay. What area would you like and do you have a price range? Sentence9: Is there a time you would like to arrive by? Sentence10: TR6539 will arrive by 22:54. Booking was successful, the total fee is 113.4 GBP payable at the station. Your reference number is IE5RK2IG . Do you need anything else? Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[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: Most of the hotels and guesthouses have free wifi. Is there a particular part of town that you're interested in? Sentence2: I am not showing anything would you like me to check in a different price range? Sentence3: I just need a moderately priced hotel with free wifi and parking. Sentence4: Are you sure you can't find any hotels moderately priced with free parking and free wifi anywhere? Sentence5: That address is Back Lane, Cambourne. The TR8636 departs Cambridge at 20:36, would you like to book a seat on that one? Sentence6: Thank you for all your help. That is all the information I need. Sentence7: I don't care what part of town it's in, but I would like it to be a hotel rather than a guesthouse, and I'd like it to be moderately priced. Sentence8: Yes, I'll need the address and I will also need a train from Cambridge to Norwich on Monday, leaving after 20:15 Sentence9: How long is the trip, and what time does it arrive in Norwich? Sentence10: I cannot find anything in a moderate price, but I found a cheap hotel for you. It's The Cambridge Belfry in the west. It has 4 stars. Is this alright? Sentence11: Glad to be of help. Thanks for using our service. Goodbye. Sentence12: Unfortunately there are no hotels or guest houses that meet those criteria. Would you like to try a different price range? Sentence13: I'm looking for a place to stay that offers free wifi Sentence14: the trip is 79 minutes long and it will arrive by 21:55. Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]:
Answer: (B) System