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 Huntington Marriott Hotel is located in the west part of town and is a 4 star rating. Sentence2: Yes, can you help me find a place to dine that is in the same area as the hotel? Sentence3: May I have the address as well please? Sentence4: I'm looking for a four star place to stay. Sentence5: Thank you for contacting us and have a nice day. Sentence6: Expensive would be good. And I prefer the west part of town. Sentence7: Ok thank you. That's all I needed, bye now. Sentence8: Could you give me the phone number for that hotel? Sentence9: I'd love to help you out there. What price range or area are you looking for? Sentence10: Is it an expensive restaurant? I'll need the address, postcode and phone number Sentence11: I am sorry I was clearly misinformed. How about graffiti? They are in the west phone is 012232477977 & postcode is cb30lx. Sentence12: Sure thing, here is a place saint johns chop house. Sentence13: Does it have free parking and what is the price rage? Sentence14: It's in the expensive price range and yes, there is free parking there. Sentence15: Their phone number is 01480446000. Can I help you with anything else today? Sentence16: Yes, their address is Hotel Felix Whitehouse Lane Huntingdon Road. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User