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: There are quite a few! I recommend kettles yard or the cafe jello gallery. Both have free admission. Sentence2: Ok. let me think about it. That will be all for today. Goodbye Sentence3: 01223240089 cb17sr 5 mowbray road. is there something else i can help you with? Sentence4: Thank you for calling Cambridge TownInfo centre! We are happy to serve you and hope you have a wonderful time in Cambridge! Sentence5: I would like to visit a museum in the west. Are there any museums I can see? Sentence6: Sure, what part of town do you prefer? Sentence7: aylesbray lodge guest house is a 4 star and is in the south of town Sentence8: The Aylesbray Lodge Guest House fits your criteria. Would you like to make a booking? Sentence9: My favorite place in the south is the Aylesbray Lodge Guest House. Would you like me to book a room for you? Sentence10: I would like a hotel to stay in while I visit cambridge. Sentence11: I need it to be a 4 star Guesthouse with free parking. Does this fit our needs? Sentence12: No, I don't need a reservation right now, but I do need their phone number, postcode, and address. Sentence13: I actually only want a guesthouse if there is not a 4 star hotel with free parking available in the south Sentence14: We're visiting the south part of town, so let's stick with that area. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User