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

[Q]: Sentence1: No that's all I needed. Thank you! Sentence2: Mumford Theatre sounds great. May I have their address and entrance fee, please? Sentence3: The bridge guest house phone number is 01223247942. Can I help you with anything else? Sentence4: Hi, I'm traveling to Cambridge and I'm excited about tourist attractions. I'm looking for theatres in the centre of town. Sentence5: Can I please get their phone number as well? That's all I'll need for the day. Sentence6: I have many. May I suggest either The Cambridge Arts Theatre or Mumford Theatre? Sentence7: Unfortunately I am unable to find information on the entrance fee but the address is anglia ruskin enterprise, east road. Their phone number is 08451962320 Sentence8: Sure. The Bridge Guest House is at 151 hills road. Did you need any other assistance? Sentence9: Alright, thank you. I'm also looking for a particular hotel. It's called the Bridge Guest House, could you help me find it? Sentence10: You are very welcome, anytime. Question: Who has spoken the sentence 6? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: We have 13 trains meeting your criteria. Do you have any idea how early you want to leave? The first train leaves at 11:32 and then every hour after that Sentence2: Are there any cheap options in the centre of town? Sentence3: We can take care of that too, but let's get your restaurant squared away first - in order to provide an address I'll need to know what type of cuisine? Sentence4: Whichever one you think is best please. Sentence5: to cambridge from broxbourne. i need to leave after 11:15 please Sentence6: Where will you travel too and from? Sentence7: Thank you for using the Cambridge TownInfo centre. Goodbye. Sentence8: excellent. I will need the train booked for 5 as well. Sentence9: It has been booked. You reference number is UCICW103 . Sentence10: I recommend the Dojo Noodle Bar. They're located at 40210 Millers Yard, City Centre. Sentence11: I will be traveling on Sunday. Sentence12: Hi. Can you help me find a restaurant? Sentence13: and what day will you be traveling on? Sentence14: The train should leave broxbourne after 11:15 so the 11:32 is a good choice. There are 5 of us traveling together. Please book. Sentence15: There are a lot of options in Cambridge. Can you please be more specific? Sentence16: Yes, there are chinese, asian oriental, indian, italian, spanish, portuguese, modern europe, and mediterranean available. Sentence17: Great. Thank you so much. Sentence18: Can I have the address? I am also looking for a train that leaves on Sunday to Cambridge. Question: Who has spoken the sentence 16? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Train TR4373 arrives in Cambridge at 12:23. Would you like me to book that for you? Sentence2: Would you be interested in one of the 4 theatres located in the centre? Sentence3: No, no ticket needed right now. I do need the price and travel time, though. Sentence4: There are 1,414 trains to Cambridge. Where would you like to depart from? Sentence5: It is 75.10 pounds and takes 163 minutes. Sentence6: I am looking for a train that is going to Cambridge. Sentence7: I would like to depart from Birmingham New Street on Tuesday. Sentence8: Great, the theatres are Adc Theatre, Cambridge Arts Theatre, mumford theatre, and the cambridge corn exchange. Does any one of those in particular interest you? Sentence9: Also, can you please provide me with attractions in the centre? Sentence10: I think that will be everything I needed. Thanks for your help! Sentence11: Yes that would be fine. Sentence12: There are 19 trains leaving Birmingham New Street and arriving at Cambridge on Tuesday. Did you have a specific departure or arrival time? Sentence13: I would like to arrive by 19:30 Sentence14: Thanks for using our system! Question: Who has spoken the sentence 9? (A) User (B) System
[A]:
Answer: (B) System