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 would be on the train for an hour, is this OK? Sentence2: I'm sorry, the booking was unsuccessful. Would you like to try a different day or try booking another hotel? Sentence3: I'd like to arrive by 14:15. Sentence4: It looks like they run hourly at 32 minutes past the hour, starting at 5:32. Did you have a day and time in mind? Sentence5: Yes, I need a train to get me to Cambridge. I'm coming from Broxbourne. Sentence6: It doesn't really matter, I'm not familiar with the town. I just need free WiFi and free parking. Sentence7: How long will I be on the train? Sentence8: Oh, I'm sorry, that was my mistake. I do have you booked now for five nights now, reference number 1UX4GMPA . Is there anything else I can do for you? Sentence9: Can you try again, please? I never told you how many nights we need. We'd like to arrive Wednesday and stay for 5 nights. We're a party of 7. Sentence10: Thank you for contacting us. Have a great day. Sentence11: Sure, I can find one for you. What area of town would you like to stay in? Sentence12: No, thank you. The information was all I needed for today. Sentence13: The acorn guest house is located in the north and offers free parking and internet. Phone number is 01223353888 and has 4 stars. Sentence14: That's what I need. Will you book acorn guest house for me starting Wednesday for 7 people, please. Sentence15: TR3158 departs Broxbourne at 12:32, arrives at 13:32, and is a one hour ride. Would you like me to book it? Sentence16: Yes, so to clarify, what time will that train be departing? Sentence17: I'm looking for a guesthouse to stay in that's moderately priced. Sentence18: Sure, the train that arrives closest to 14:15 is TR7834 arriving at 13:32. How many people will be riding? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System