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 many in Cambridge. Is there a certain area of town you prefer? Sentence2: We are going to be on the westside, anything close by there? Sentence3: cambridge book abd print gallery sounds wonderful. Can I please have their address and phone number? Sentence4: Cambridge book and print gallery is a wonderful place and there is no entrance fee. Will there be anything else today? Sentence5: thank you that will be all for now Sentence6: Will you be needing a reference number? Sentence7: Tell me more about the museum. Sentence8: Is there anything else I can help you with today? Sentence9: Thank you so much. That is all I need today. Sentence10: I would like to find an expensive Indian restaurant in Cambridge. Sentence11: Their address is 49 newnham road and they are located at 01223694264 Sentence12: Yes, please. And I could also use some help finding something fun to do in the west as well. Sentence13: Grat, cant wait to get there, ...wow. I am actually all set now, that went much faster than expected. Thanks for your efficiency. Sentence14: Yes, there are 5. I think you'd really like tandoori place. Want more info? Sentence15: Yes, can you see if you can make a reservation for me for 15:45 on Tuesday for 4 people? Sentence16: Your table has been reserved. The reference # is G0843WFO . There are many fun things to do in town. What kind of things interest you? ...museums, colleges? Sentence17: Oh gosh, I'm so sorry. I must have forgotten that I need the postcode for the museum. Can I get that please? Sentence18: its no problem. the post code is cb39ey Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System