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: How about cheap in any area please? Sentence2: I need a guesthouse rental that has free parking. Sentence3: I would like in the cheap price range in the west. Sentence4: I am sorry but finches bed and breakfast is solidly booked. Do you want me to search for another guesthouse? Sentence5: So glad we were able to get you booked. Have a great day. Good-Bye! Sentence6: Okay I was able to get you into the Alexander Bed and Breakfast in the city center and the reference number is QW52L6EX . Sentence7: Sure, we have 21 guesthouses that offer free parking. Do you have a price range you're looking for or some part of town you want to stay in? Sentence8: The address is 144 thornton road. I need to know when your stay is going to be and for how many please? Sentence9: I am not finding any other cheap places to stay in the west. Maybe a better price point? Moderate or expensive maybe? Sentence10: I found one guesthouse that meets that criteria. It is finches bed and breakfast. Would you like me to book it for you? Sentence11: Great, thank you very much for your help! Sentence12: Yes please another hotel in the same price range if possible. Sentence13: 4 people. Starts from Saturday, 4 nights. Sentence14: Book it for me and I need the address,thank you. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User