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: You'll be in a white Skoda and the contact number is 07935 536 503. Can I confirm, though, that you wish to leave the restaurant at 5:15 in the morning? Sentence2: Any of them will be ok I also need the postcode and area it's in. Sentence3: The postcode is cb21uj. Is there anything else I can help you with? Sentence4: I recommend kings hedges learner pool in the north the postcode is cb42xh. Is there anything else I can help you with today? Sentence5: There are 2 and they are both in the centre. Anatolia & efes restaurant. Which do you prefer? Would you like a reservation? Sentence6: Yes, I also want to book a taxi. Can you help me with that? Sentence7: Can you give me the postcode? Sentence8: No thank you that will be all Sentence9: I have four, what area were you looking to swim in? Sentence10: the restaurant and the swimming pool of course. I want to leave the restaurant by 5:15 sharp Sentence11: Can I get more information about Anatolia? Sentence12: Moderate Range Turkish food. Phone, 01223362372. Anything else? Sentence13: Great - you are all set with your white Skoda. Anything else I can help with? Sentence14: Perfect, thanks. Can you also help me find a good Turkish restaurant that's moderately priced? Sentence15: Great! Have a nice day! Sentence16: Hi, I was wondering if there was a swimming pool that an out of town person could use while visiting. Sentence17: Yes, I want to leave the restaurant by 05:15. Sentence18: Where will the taxi be leaving from and going to? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User