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: The postcode is cb41er. How long would you like to stay and how many should I book the hotel for? Sentence2: That would be great! Can you let me know what the post code is? Thank you! Sentence3: The Ashley hotel is a 2 star hotel in the north with free parking in the moderate price range. I can book this for you. Sentence4: Can you give me the phone number and postcode for the Jesus Green pool, please? Sentence5: No that is all thank you. Sentence6: I don't need to book it at this time. Can you help me find a place to visit while I'm in town? I'd like a swimming pool in the North. Sentence7: Sure, the phone number is 01223302579 and the postcode is cb43px. Can I help with anything else today? Sentence8: I would prefer to stay in a 2 star hotel in the north. Sentence9: Is there a specific part of town you would like to stay in? Sentence10: Thank you, goodbye. Sentence11: We list two swimming pools in the north area, jesus green outdoor pool and kings hedges learner pool. Would you like more information on either of those? Sentence12: I am looking for a place to stay in the moderate price range. It must include free parking. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User