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: Yes, there are 5. I recommend All Saint's Church as it is beautiful! Would like more information on it? Sentence2: The Aylesbray Lodge Guest house is a guesthouse in the south side with a moderate price range. It has a rating of 4 stars and has parking & internet. Sentence3: Yes, I'm also looking for entertainment in the centre of town. What's fun? Sentence4: That's perfect. What's the phone number? Sentence5: There are no places with the type entertainment in the center, I could look for a different type of attraction or a different part of town if you like. Sentence6: The phone number for the aylesbray lodge is 01223240089. Can I help you with anything else? Sentence7: Thanks for using our service! Sentence8: Thanks so much! That's all I need today. Sentence9: Could you find an architecture attraction? Sentence10: Hello! I am looking for information about a hotel called aylesbray lodge guest house. Can you help me? Sentence11: Yes, I would like more information please and will you let me know what the entrance fee is? Sentence12: all saints church is located on jesus lane and entry is free. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User