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: that sounds great. Can I have the phone number, and address for this free attraction please? Sentence2: That's fine. Is there anything else that I can help you with today? Sentence3: The phone number is 01223334900 and it is located on Saint Andrew's Street. What else can I assist with? Sentence4: That is all I need today, thank you. Sentence5: Certainly. I have five Italian restaurants in the cheap price range. What part of town do you prefer? Sentence6: I prefer to eat in the center of town. Is there anything available? Sentence7: I am looking for a college attraction in town. Sentence8: I am pretty much open to anything! Could you recommend one and give me their information please? Sentence9: Thank you for the information. I also need to find a cheap restaurant serving Italian food. Can you help me with this? Sentence10: Yup there is a place called Pizza Hut City Centre that serves cheap Italian food. Want me to book it? Sentence11: Okay, great. Have a wonderful day! Sentence12: There are 18 choices in town. Is there a specific area you would like to stay in? Sentence13: No need to book for now, just gathering information. Sentence14: Sure! Christ's college is located in the centre and is free to enter! Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User