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: One more thing. Can I have the train ID, please? Sentence2: Preferably the east. Sentence3: Thank you very much for the help. Sentence4: Could you tell me what time that train arrives in Cambridge please? Sentence5: Have a fun trip! Sentence6: There are 6 hotels in the east rated 4-stars ranging from cheap to moderately priced. Do you have a preference on price range? Sentence7: Thank you, I'm also looking for a train. Can you help with that? Sentence8: I do not, but it should have wifi. Sentence9: The price of the ticket is 12.80 pounds per person and is payable at the train station. Is there any thing else I can assist you with today? Sentence10: I can get you aboard TR2656 at 17:54. Would you like me to book you a seat? Sentence11: Absolutely. Where are you departing from, and where would you like to go? Sentence12: I am departing from stevenage anytime after 17:00. I would like to go to cambridge on monday. Sentence13: I could use some help finding a place to stay that is 4-star rated. Sentence14: The train arrives in Cambridge by 18:43. Is there something else I could also help you with? Sentence15: No thanks. That was all I needed. Have a good day Sentence16: Would you like me to book a ticket? Sentence17: Can I have the price for that ticket please? Sentence18: Of course, it's TR2656. Sentence19: a and b guest house's postcode is cb12dp. Sentence20: No, thanks, just give me the postcode. Sentence21: a and b guest house is the area of east and has free wifi and is a 4-star hotel. Would you like me to book it for you? Sentence22: In which area would you like to stay? Question: Who has spoken the sentence 19? (A) User (B) System
Output: 


Answer: (B) System