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: You're welcome! If there's anything else we can help with, don't hesitate to ask. Sentence2: Which hotels in Cambridge offer free wifi for guests? Sentence3: Yes can you book that for 4 people at 14:15 on saturday? Sentence4: Ok I would like to book a room. Sentence5: How about Lovell Lodge at 365 Milton Road? Sentence6: Okay great. How about a Chinese restaurant in the same price range? Sentence7: Yes I am interested in the north and a moderate price range. Sentence8: Booking was successful. The table will be reserved for 15 minutes. Reference number is : Q14MS7P4 . Is there anything else? Sentence9: Yes, thursday through sunday and 6 guests. Sentence10: Yes, they do offer that. Sentence11: There are several. Is there an area of town you are interested in? Sentence12: The Yippee Noodle Bar is available, would that be satisfactory for you? Sentence13: can you please tell me when and how many will join you ? Sentence14: I'm not sure at this point. For now, I just need the address. Sentence15: I was able to book the room your reference number is U4XH256U . Is there anything else I can help with today? Sentence16: do they have free wifi? Sentence17: that is it for today. thanks for helping Sentence18: In order to make the reservations, can you tell me for what day, how many guests and how many nights please? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System