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: It is a hotel. Is that ok? Sentence2: Im sorry I have nothing matching that criteria can we adjust the amenities? Sentence3: the cambridge belfry's phone number is 01954714600. Sentence4: I I need a hotel located in the west with free wifi and parking. Sentence5: Yes please. I'm also looking for a hotel in the west. I need free parking and wifi available. Thanks so much. Sentence6: The Cambridge Belfry is in the cheap range but has 4 stars, would that work? Internet and parking are available. Sentence7: Do you have a train that arrives closer to 20:15. Sentence8: Yes, TR9561 arrives at 19:27. Would you like to book that train? Sentence9: I have many trains available between Cambridge and Liverpool Street. What day are you looking to travel? Sentence10: I have train TR7299 that leaves at 5:59 and arrives at 7:27. Would you like to book that? Sentence11: Would you like me to book that for you? Sentence12: You're welcome. Is there anything else that I can help you with? Sentence13: No thank you very much. Sentence14: And the Cambridge Belfry is a hotel or guesthouse? Sentence15: Have a great time. Sentence16: That is perfect. Thank you. Sentence17: No, I don't need a booking. You have given me all the information I need, for now. Thank you so much. Sentence18: Will you needing a reference number? Sentence19: Sounds great, thanks! What is their phone number? Sentence20: I am looking for a train going from cambridge to london liverpool street Sentence21: Your train was booked successfully for 7 people. Your reference number is MQRGDBZA . There are many hotels located in the west. Are you looking for something in a certain price range? Sentence22: I would like to travel on Tuesday and I would like to arrive by 20:15 please. Sentence23: A 3 star hotel in the cheap price range Sentence24: Yes, I need 7 tickets. Question: Who has spoken the sentence 18? (A) User (B) System
Output: 


Answer: (A) User