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

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: I need the postcode please. Sentence2: That should be all the info I need, thank you! Sentence3: Sure, cambridge and county folk museum at 2-3 castle street has the entrance fee of 3.50 pounds. The phone number is 01223355159. Sentence4: Great that should work can I get the price, and departure time of that? Sentence5: What day will you be departing? Trains depart starting at 5:17 then at each odd hour. Trains arrive the next hour :08. Sentence6: Sure, the postcode for the cambridge and county folk museum is cb30aq. Sentence7: What postcode are you requesting? Sentence8: I need a train from london kings cross to cambridge. Sentence9: There are 5 museums, 4 of which are free and one costs 3.50 pounds. Do you know which area you would like? Sentence10: 18.88 pounds departure time 13:17. Sentence11: Is there an earlier train? Sentence12: There are 7 trains. The one that arrives closest to 19:15 is TR2952 which leaves at 17:17 and arrives at 18:08. Would you like to book this? Sentence13: On sunday. But I have to be there by 19:15. Which one works best for that? Sentence14: I don't care about the area. Can you give me the name, postcode, and phone number of the one with an entrance fee? Sentence15: Sorry. I am interested in finding a museum to attend and would need the postcode and phone number. Sentence16: Thank you for your help. Sentence17: I will also need the postcode please. Sentence18: There is TR1688 that arrives by 14:08 Sentence19: You're very welcome, enjoy your visit to Cambridge! Sentence20: You're welcome. Is that all I can help you with today? Question: Who has spoken the sentence 18? (A) User (B) System
Output: 


Answer: (A) User