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: Yes! The address is gwydir street, no. 5 dale's brewery; the entrance fee is free; and the phone number is 01223311687. Can I help with anything else today? Sentence2: Can you tell me the phone number, address and price range for El Shaddai? Sentence3: I'm going to need a place to stay that has free wifi and in a guesthouse. The hotel rating a zero star. Sentence4: I'm looking for something in the centre of town, maybe an art museum? Sentence5: Have a great day! Sentence6: That sounds great. Can I please have the address, entrance fee, and phone number? Sentence7: There are a couple locations that fit that criteria. Could I recommend William's Art and Antiques museum? Sentence8: Hi, I'm traveling to Cambridge and would like to find some places to go. Can you help me? Sentence9: Yes I can! There are a total of 79 different attractions in Cambridge that you can visit. Is there a particular type of attraction you would like to see? Sentence10: No, that's it. Thanks! Sentence11: El Shaddai fits your preferences and is located in the centre of town. Would you like me to make a reservation? Sentence12: The price range is cheap, you would need to call for more specific information. Their phone number is 01223327978, and they are located at 41 Warkworth Street. Anything else? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System