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: Yes, please book this. Sentence2: I found 4 restaurants, would you like to try Cotto? Sentence3: Thank you, can I also get a train leaving petterborough and arriving by 11:15 Sentence4: That's all I need, Thank You. Sentence5: Sure, can you try to get a table for 8 people at 17:00 on Tuesday? Sentence6: Okay... how about British food? Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : IAUXALYD . Sentence8: I just need to make sure I arrive in cambridge by 11:15 please. Sentence9: I would like to try Jamaican food. Sentence10: Unfortunately I can't find any Jamaican restaurants. Is there another type of food you'd like to try? Sentence11: Absolutely. How many tickets would you like to be booked? Sentence12: There are 21 different restaurants in that area matching your price range. What kind of food are you in the mood for? Sentence13: I'm looking for a moderately priced restaurant in the center of town. Sentence14: Sure thing! The reference number is S4FM08GE . See you! Sentence15: There is a train that leaves at 10:19 and arrives at 11:09. Would you like to book it? Sentence16: there are eleven trains that match that criteria. What time would you like your departure time to be? Sentence17: Yes, Tuesday, the same day as the restaurant booking, can I please get a departure time as well? Sentence18: Before going further I would just like to confirm you'd be leaving on Tuesday, is that correct? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User