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. How about Cafe Jello Gallery. The postcode is cb30af and phone number is 01223312112. Sentence2: not today. i also want information about a place to go and should be in the west Sentence3: To commute between both places, I want to leave the hotel at LEAST by 21:45. Sentence4: I am looking for a certain hotel. I think that it is called something like Allenball Sentence5: You're welcome. Let me know if you end up needing anything else. Sentence6: Would you like me to make a reservation there for you? Sentence7: Yes, Allenbell has both free parking and internet and is in the cheap price range. Would you like to reserve a room? Sentence8: A museum sounds fun can I have the phone number and postcode for the one you recommend? Sentence9: Sure! Where do you need it to go and when will you need it? Sentence10: Okay thank you, that's all I needed. Sentence11: Do you know if they offer free parking? Sentence12: Please look for a grey Audi. The contact number is 07213476873. What else can I help with today? Sentence13: There are 13 great places you could visit. Do you have a particular attraction in mind? I would recommend a museum. Sentence14: Thanks, can you also book me a taxi? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System