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: That's exactly what I needed. Thank you. Goodbye! Sentence2: Little saint mary's church is an architecture site, their address is little saint mary's lane, and postcode is cb21qy, and the phone number is 01223366202 Sentence3: I am looking for places to see in town. Can you help me? Sentence4: The TR6906 departs at 23:21 and arrives at 24:10. Would you like me to book it for you? Sentence5: I just need the price on that one please. Sentence6: The price is 12.80 pounds Sentence7: Cambridge offers many attractions. Is there a certain part of town or type of attraction you'd like to narrow your search down to? Sentence8: Have a great trip. Goodbye. Sentence9: I'm leaving from Cambridge going to stevenage. Sentence10: what is your destination. Sentence11: Thank you. I'm also looking for a train that leaves on Monday. It will need to leave after 21:45. Sentence12: I really don't have a preference. I'll let you pick! I'll need the address, postcode and the phone number. Thanks so much! Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System