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

Ex Input:
Sentence1: I have 5 choices for you. If I might suggest the Holy Trinity Church. It has the most unique architecture in our area. They also offer free admission. Sentence2: I will be visiting the centre. Sentence3: Like I mentioned, Holy Trinity Church is totally free. Is there anything else you'll be needing today? Sentence4: Sounds great. Do you happen to know the entrance fee for it? Sentence5: OK I HAVE 1 TRAINS THAT LEAVE AROUND THAT TIMES ONE AT 21:39 WOULD THAT WORK FOR YOU ? Sentence6: I need a train that lease from London Liverpool Street on Tuesday. Sentence7: Yes as long as it leaves AFTER 20:45 that will be fine. How much is it and how long is the travel time? Sentence8: There are 10 days departing London Liverpool Street on Tuesday. Is there a certain time of day you need to travel? Sentence9: No, I don't think so! Thank you for your help! Sentence10: How about architecture type instead? Sentence11: Thank you for using Cambridge TownInfo centre. Please remember us for all of your future travel needs. Sentence12: Which area are you interested in visiting in town? Sentence13: I would like to leave after 20:45. Sentence14: the train ride is 88 minutes and the cost is 16.60 pounds. it leaves at 21:39 and your reference number is Q6UN1GVR . is there anything else i may help you with? Sentence15: There is no entertainment in the centre. Would you be interested in a different type of attraction? Sentence16: I am looking for places to go in town. What type of entertainment is there in the centre? Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: I would recommend the cherry hinton water play on the east. It is also free admission. Sentence2: The duration is 163 mins.Do i need to book something for you? Sentence3: Thanks for the park info. In review, I don't see a train ID departing from Cambridge after 10:45. Do you have it? Sentence4: You're very welcome. Good day. Sentence5: I can help! What day are you looking to travel? Sentence6: I do not have a preference on a side of town. Sentence7: I need to leave on Thursday. Sentence8: I am looking for a park, can you help me with that? Sentence9: It is 163 minutes Sentence10: Okay Could I have their telephone number please? Sentence11: The phone number is 01223336265. Sentence12: Can you also tell me about some parks that I could visit? Sentence13: Their address is cherry hinton hall, cherry hinton road. Is there anything else I can help you with today? Sentence14: May I suggest cherry hinton water play, since it will be warm out. It's located in the east. Sentence15: I'm looking for a train going to Birmingham New Street. Sentence16: Is there an area you prefer? Sentence17: We've got about 19 trains for that route. Do you have a certain time you want to leave after or arrive by? Sentence18: Thanks. Can you please give me its address? Sentence19: Yes i'd also like parks I can go to. Sentence20: I think that is all I need today. Thank you for your help. Sentence21: I want to leave on Saturday and leave after 10:45. Could you give me the travel time? Sentence22: We have 5 great parks in town. My favorite is the Botanic Gardens in the center. It's well worth the 4-pound entrance fee. Sentence23: TR5669 leaves Cambridge at 11:01 and arrives at birmingham new street at 13:44. May I help with anything else? Sentence24: Sorry, how long is the travel time on the train? Question: Who has spoken the sentence 19? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Thanks. Now can you look up a welsh food restaurant that is expensive and in the centre? Sentence2: You're welcome. Enjoy your visit. Sentence3: I want to take a train from Stevenage to Cambridge. Sentence4: Yes there is one option here. It is little seoul. What day and time for your booking? Sentence5: I don't need to purchase tickets today, but can you tell me the train ID and the total travel time to get me there? Sentence6: What is the price of a ticket, please? Sentence7: I Would like it on Monday at 18:15. Sentence8: Booking was successful. The table will be reserved for 15 minutes. Your Reference number is : X54JY6CB . Sentence9: Thanks, that's all I needed today! Sentence10: Can you please try again? Sentence11: I would like to leave on Monday and arrive in cambridge by 12:45. Sentence12: For how many people? Sentence13: TR9062 will take 49 minutes, from 11:54 to 12:43. Do you need anything else? Sentence14: Oh darn it! How about... maybe korean food? Still in the centre, and they need to be able to seat 7 people. Sentence15: It isn't allowing me to book that for you. Is there anything else I can try for you? Sentence16: What day and time do you want to leave Stevenage? Sentence17: Departure time isn't important as long as I can get there by 12:45. Sentence18: I have 4 trains available. What time would you like to leave? Sentence19: The price of TR9062 is 12.80 pounds. Sentence20: I'm sorry I couldn't find any welsh restaurants matching that criteria . Would you like to try a different area or type of food? Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:

Answer: (A) User