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 am looking for an expensive hotel with free parking in the north part of town that is a guesthouse. Sentence2: No, thank you for your help. Sentence3: May I suggest the Worth House? It's a 4-star guesthouse located in the north. Alternately, the City Centre North B and B is a 0 star-option. Do you have a preference? Sentence4: I am needed to find a cheap place to dine that serves Indian food. Sentence5: For how many people is this booking? Sentence6: I am looking for a place to stay. Sentence7: There are many hotels in the area, did you have a price range or area you wanted to stay in? Sentence8: I was not able to find any hotels that met those requirements. Sentence9: I have confirmed your reservation at royal spice for one on Saturday at 19:00. Your reference number is 3RFA2T98 . Can I help you with anything else? Sentence10: I am interested in the one in the north. Sentence11: Your reference number for the Worth House room is RA8UPYY3 . Is there anything else I can help you with? Sentence12: Alright, no problem. Have a nice day! Sentence13: Book a table for 1 person please. Sentence14: Yes, please for 19:00 on Saturday. Sentence15: That would be Royal Spice then. Would you like me to book it? Sentence16: Worth house sounds much nicer. That is cheap correct? If so could you please try and book it for me for 3 nights? Same day and people. Sentence17: There are 4 restaurants that meet your needs - 3 in the center of town and 1 in the north. Are you interested in any of these? Sentence18: I need the reference number Sentence19: How about a guesthouse that is in the cheap price range? Sentence20: You are booked for Worth House for 3 days starting on Saturday. Is there anything else I can help you with? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User