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, I am also looking for places to go in town while we are visiting the area. Do you have anything of concert halls around the area? We love those. Sentence2: Yes, please, what is the phone number? Sentence3: I have that all booked for your stay. Your reference number for the room is ZUG88XKL . Is there anything else I can help you with? Sentence4: I am looking for a place to stay. It should be in a moderate price range and should be a star of 3. Sentence5: The phone number is 01223474144. Sentence6: Yes, I need a booking for 8 people for 5 nights starting Monday. Please include the reference number for the booking. Sentence7: Also the address to the man on the moon is 2 Norfolk Street. You have to call to inquire about the entrance fee. Have a Great day. Sentence8: We have one. The Man on The Moon. But it is located in the centre area of town. Would you like more information? Sentence9: Ok, perfect. Thanks! Sentence10: i have four results that match your request, do you need internet? Sentence11: I have the Hobsons House. It is a moderately priced guesthouse located in the west. Free wifi and internet. Can I assist you in booking a room? Sentence12: Internet is not necessary. But can you see if there is one in the west part of town and I would prefer a guesthouse. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User