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: There are no 4 start hotels in the north with free wifi. Sentence2: Can you also help me find an indian place to eat. Sentence3: I'm sorry, I meant to ask for help finding something fun to do in town in the north side of town. I don't need a restaurant after all. Sentence4: What about a guesthouse with 4 stars in the north? Sentence5: Is there a certain area or price range you would like? Sentence6: The parking does not matter. Sentence7: I'm not ready to book it. I would just like to know the entrance fee. Sentence8: Yes, I would have to give them a quick call. How many people and what day? Sentence9: find me its entrance fee Sentence10: no thanks that will be all then Sentence11: Yes, I would recommend Avalon. It is at 62 Gilbert Road, postcode cb43pd. Sentence12: There are no 4 star hotels in the north are with free internet. Is there anything else I can help you with? Sentence13: Okay! What part of town would you like to stay in? Sentence14: I am glad that I can help. Have a nice stay. Sentence15: would you like to book something without free wifi, or in another area. Sentence16: riverboat georgina is in the north. Would this work? Sentence17: Can you tell me the phone number? Sentence18: Sure, the phone number is 01223353071. Sentence19: I'd prefer something in the North, a 4 star hotel with free wifi if possible. Sentence20: I'm sorry. The entrance fee for the Riverboat Georgina is unknown. Would you like the phone number? Sentence21: i need a place to stay Sentence22: can I get a boat? Sentence23: do you have a type in mind? Sentence24: Yes, I see several guesthouses available! They are all in the moderate price range; does parking matter to you? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User