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

[EX Q]: Sentence1: What is the address and postcode? Sentence2: That's all I need. Thanks, good bye. Sentence3: The address is Parkside, Cambridge and the postcode is CB11JG. Sentence4: The telephone number for the Parkside Police is 01223358966. Sentence5: Glad I could be of service. Sentence6: I'm looking for a the Parkside police station. Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I do not have all of that information at this time. Can I talk to you again when I know more? Sentence2: I am looking for a hotel with free parking in the North. Sentence3: Okay. Please help me book this guesthouse. Sentence4: Yes that is all right. Sentence5: Yep there are 5 guesthouses. Do you wanna just try acorn guest house? Sentence6: Are any of those 11 guesthouses? Sentence7: Does it offer free wifi? Sentence8: It's my pleasure. Have a nice trip! Sentence9: What day, number of nights, and number of people would you like to book for? Sentence10: Thank you for your help! Sentence11: Yes, it does have internet. Sentence12: There are 11 hotels that meet your needs. Would you like to narrow them down by price range? Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Actually, could you shorten that to one night? Sentence2: TR8903 leaves Birmingham New Street at 18:40 and arrives in Cambridge at 21:23. It's a rather long trip. Sentence3: A cheap one with wifi, please. Sentence4: Great, we hope you have a great stay. Sentence5: Can you try the hotel with a 1 night stay on the same day? Sentence6: No, I would need it to be for 3 days and 8 people, what hotel could accomidate me? Sentence7: Thank you for your assistance. Sentence8: No, that will be all. Thank you so much! Have a good day. Sentence9: I have 6 places that would fit your needs. Do you have a specific price range in mind? Sentence10: I am sorry there are no hotels available. Would you like another type of lodging? Sentence11: Yes, I need a train from birmingham new street to cambridge. Sentence12: Please, book the Holiday Inn Cambridge, and I need the reference number. Also, I am looking to book a train the same day from Birmingham new street to Cambridge leaving after 18:30. Sentence13: I think allenbell would fit your needs. Would you like a reservation? Sentence14: No, but I would like to know the arrival time for the train fitting my criteria. Sentence15: Unfortunately there isn't any availability during that time. Would you like to book another day or shorten your stay? Sentence16: I am looking for a place to stay that has a 4 star rating in the east part of town. Sentence17: Is there a time you need to arrive by? Sentence18: There is one hotel available, Express by Holiday Inn Cambridge, however it is only 2 stars and in the expensive range. Sentence19: Is there anything else that I can help you with? Sentence20: I want it to leave after 18:30. Sentence21: On Friday there are a train leaving at 5:40 and the cost is 75.10 pounds. The trains depart every hour, so you can chose your time. The last train depart at 9:40. Sentence22: I apologize, the hotel booking was unsuccesful. Would you like to try another day? Sentence23: Yes a booking for 8 people for 3 nights starting on Tuesday. Sentence24: You are in luck for 1 night at Allenbell. The reference number is PYGL9EVW . You would like a train? Question: Who has spoken the sentence 19? (A) User (B) System
[EX A]:
Answer: (B) System