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: There is only me. Sentence2: I'd be happy to reserve your rooms for you. How many people will you be traveling with? Sentence3: Parkside pool is in the centre of town. The address is gonville place and the phone number is 01223445100. Sentence4: Enjoy your stay in Cambridge, have a great day! Sentence5: There is a bed and breakfast on 56 saint barnabas road by the name of Alexander, with free parking, internet and 4 star rated. All in a very cheap price. Sentence6: I can help you with that. Do you prefer hotels or guesthouses? Sentence7: There are 4 to choose from. Would you rather go to one located in the east, north, or centre? Sentence8: Let's put the pool on hold. I forgot to ask you to book the Alexander for me. It is just me for two nights beginning Saturday. Sentence9: I would like to find a pool as well. Sentence10: We didnt pick out a pool yet, any preference in area? Sentence11: I am sorry I need to know where you are going? Sentence12: That does not matter but I would like it in the cheap price range. Sentence13: Yes, I'd like in to be in the centre of town Sentence14: I'm looking for a place to stay in Cambridge Sentence15: That sounds perfect. That's all I needed for today, thanks. Sentence16: Your booking for Alexander bed and breakfast was successful. The reference number is F371FPBA . What else can I do for you? Sentence17: I would like a swimming pool at the centre of town. Sentence18: Please arrange for a taxi to pick me up from the attraction at 21:00 and take me to the hotel. I'll need car and contact info too. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User