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: You're quite welcome. Have a good day! Sentence2: Do you have any that would arrive at 17:45, leaving tuesday instead? Sentence3: the next train from kings lynn is Friday 5:11 to Cambridge Sentence4: Yes, there are 12 trains that fit that criteria. Do you have a desired departure time? Sentence5: I am looking for some type of entertainment. Sentence6: Sure, what are you interested in seeing? Sentence7: Can you help me find a train from kings lynn? Sentence8: All booked! Your train ID is TR8177 and the reference number is ZDTM4B8N . You will be arriving at 16:58. Sentence9: Thank you. I'm also looking for places to go in town. can you help me with that? Sentence10: Whatever gets me there as close to 17:45 as possible. Can you book it for 7 people please? Reference number and train ID would also be lovely. Sentence11: Funky fun house is located in the east side of town, address is 8 mercers row, mercers row industrial estate postcode cb58hy, phone 01223304705. Is there anything else needed? Sentence12: Thank you so much. That is all. Sentence13: There's the Funky Fun House on the east side of town, does that sound ok? Sentence14: That sounds great, may I have the postcode, phone number and area of town it is in? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System