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 several in that price range. Did you have a particular area in mind? Sentence2: It should also be a guesthouse with a 4 star rating. Do you think Allenbell would work? Sentence3: No, but could I get their address? Sentence4: I do not. Can you make a suggestion? Sentence5: Yes, allenbell meets all that criteria. Would you like me to book? Sentence6: How many tickets do you need? Sentence7: Thank you. You as well! Sentence8: I have booked a ticket for one and here is the information-Booking was successful, the total fee is 17.89 GBP payable at the station . Reference number is : DFSN06MO . Sentence9: I also need a cheap place to stay with free parking. Sentence10: Yes, they are at 517a coldham lane, postal is cb13js, can I assist with anything else today? Sentence11: I only need one ticket. Sentence12: Great, that's all I need, thanks so much for your help! Have a great day! Sentence13: Yes, I would suggest allenbell Sentence14: I'm looking for train information that leaves broxbourne after 0800. Can you help? Sentence15: Yes, please! That would be great. Thank you! Sentence16: The TR3005 train leaves Broxbourne on Friday at 8:32 and will arrived at Cambridge at 9:32. Would you like me to book you? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System