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: Thank you for contacting Cambridge TownInfo centre. Goodbye! Sentence2: What is the postcode there? Also, I'll need a phone number. Sentence3: I am looking to go to a museum. Sentence4: I would recommend golden house. It is a chinese restaurant at 12 Lensfield Road City Centre, postcode cb21eg, phone number 01842753771. Would you like me to book it for you? Sentence5: The address is cafe jello gallery, 13 magdalene street , is there anything else you need? Sentence6: No, thanks, I'll do that myself. You've been great, thanks for everything. Sentence7: I'm willing to go wherever the best museums are. Which would you recommend? Sentence8: Can you tell me about the gallery? What's the address? Sentence9: The cafe jello gallery is top notch. And there's no entrance fees. Or how about cambridge artworks their pretty nice as well. Both are in the west. Sentence10: The postcode is cb30af, sorry I do not have a phone number for the cafe jello gallery. Sentence11: Well then, can you give me an address? Sentence12: This gallery is located on the west side of town located at 13 magdalene street Sentence13: There are quite a few fantastic museums to choose from. Is there a specific area you are looking for? Sentence14: Yes, I need information on a cheap restaurant in the centre of the city...whichever you recommend. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System