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 would like to find a hotel in the north that has free wifi. What are your suggestions? Sentence2: What price range are you interested in ? Sentence3: No and no. I want a 4 star hotel on the north side with free wifi and parking. Sentence4: Yes, how may people and how long will your stay be? Sentence5: There are 7 guesthouses in the north matching your description. I recommend acorn guest house. Sentence6: Can we try another search I really need a place to stay it can be a guesthouse or hotel. Sentence7: Yes that would be great, can you book that please? Sentence8: I prefer a hotel, not a guesthouse. I need a 4 star hotel with free parking and wifi in the north. Sentence9: how many should i book for and how many day? Sentence10: A table for 1 has been booked for Tuesday at 18:15 at Da Vinci Pizzeria. Your confirmation number is BSJDIVC3 . Sentence11: Sorry, I'm not finding anything. Sentence12: Is there a certain star rating you would like it to have? Sentence13: Can we find one that serves Italian food instead then? Sentence14: I'd like to to book it for 1 people and 5 nights starting from tuesday. Sentence15: I need it for 18:15 for one person on a Tuesday. Sentence16: I've booked a single occupancy room at Acorn Guest House for five nights beginning Tuesday. Your reference number is 4KJSRRGA . Can I help you with anything else today? Sentence17: Does it also have free wifi? Sentence18: Thank you for contacting us and have a nice day. Sentence19: Sorry no north indian restaurants in the north. Sentence20: Can you book it for me? Sentence21: Okay, I have 7 options for guesthouses in the North. 6 of them are in the moderate price range and one is is cheap. Which are you looking for? Sentence22: It doesn't really matter, but I would like free parking. Sentence23: da vince pizzeria is the one option in the north, it has cheap pricing, would you like more info or a booking? Sentence24: I have 7 available guesthouses in the north. I would suggest Home from Home it is a great guesthouse. Would you like me to book a room for you? Sentence25: Yes it has free wifi. Sentence26: I am sorry there are no hotels that are available. Would you consider a guesthouse or a different area? Sentence27: I'm looking for a North Indian restaurant that's near the guesthouse. Can you find one? Sentence28: Thanks so much. That is all I need. Have a great day. Bye. Sentence29: Yes, I really like 4 star hotels. If you find one, I'd like to book a room. Sentence30: Okay, I need a guesthouse with free parking, and 4 stars. Price doesn't matter, you can pick one. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User