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: The phone number is 01223334200 and the address is saint andrew's street. Sentence2: The emmanuel college is free and it is on saint andrew's street. How does that sound? Sentence3: That sounds great!! Can I have their address, and how much is the entrance fee? Sentence4: I am looking for places to go in the centre of town. Can you help? Sentence5: Yes, I also need a place to stay. Are there any 4 star hotel in the north with free parking? Sentence6: Nope, I'm all set. Thank you! Sentence7: The price doesn't matter as long as it's a 4 star hotel. Sentence8: thanks for all your help! Sentence9: I would recommend acorn guest house. Would you like a reservation? Sentence10: In the centre would be perfect! Sentence11: You're Welcome! Enjoy your stay! Goodbye. Sentence12: Do you have a price range preference? Sentence13: Is there a college I could visit? Sentence14: Is there anything else I can do for you today? Sentence15: There are lots of places to visit in the city centre. What type of place would you like to visit? Sentence16: It is located at saint andrew's street and it's free! Anything else? Sentence17: No, but can I have the phone number and the address? Sentence18: In what area would you prefer it to be? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System