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: Sure! Milton County Park is free, and their phone number is 01223420060. Can I help you with anything else? Sentence2: I don't have any in the north, but I have several in the centre. Would you like to try one of those? Sentence3: I need a place to stay, some place with 4 stars and in the north. Sentence4: I was able to find a taxi to take you from the hotel to the park. It will be a yellow volvo phone number is 07803372639. Sentence5: Yes. Could I get the entrance fee and phone number please? Sentence6: Okay. Is there anything else I can help you with? Sentence7: The postal code is cb43pe. Yes, it does have free parking. Is there something else I can assist you with? Sentence8: Archway House is a very nice 4 star guesthouse in the area that is moderately priced. Would you like to book a stay? Sentence9: Thank you for contacting us and have a nice day. Sentence10: I would like one in the moderate range. Sentence11: Can you help me find a nightclub to visit somewhere in the north? Sentence12: There are number of moderately priced options and one that falls in the cheap price range. Do you have a price range in mind? Sentence13: No, I want to stay in the same area. How about a park? Sentence14: There is one park in the north. Would you like the info? Sentence15: Yes, tell me if the Archway House has free parking and please get me their postcode Sentence16: That is all I needed today. Sentence17: I also need a taxi. It should leave the hotel by 2:30 please. Sentence18: I think that one works. No need to book. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System