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 sounds great. I need to book it for 5 people at 11:45 on Friday. Can I get the reference number please? Sentence2: Did you have a certain time you would like to leave after or arrive by? Sentence3: No but I am looking for a Lebanese restaurant in the city's center. Sentence4: Thank you for using our service today! Sentence5: Ali Baba is the only lebanese restaurant in the centre of town in the moderate price range. Sentence6: Yes, I need to arrive at Bishops by 14:45. Sentence7: Thanks for that. I also need a train to bishops stortford from cambridge. I need it to leave from cambridge on Friday. Sentence8: You're all set. Ali baba will be expecting the 5 of you at 11:45 on Friday. Your Reference number is : UHPZFTUK . Sentence9: TR8585 leaves cambridge at 13:29 and arrives in Bishops Stortford at 14:07. The price is 10.10 pounds. Would you like me to book it for you? Sentence10: sure, i have so many options for you! Sentence11: Bedouis is located in the centre of town. Their address is 100 Mill Road City Centre. Their phone number is 01223367660 Sentence12: Great, what would you recommend for me? Sentence13: Thanks so much. That's all I needed today. Sentence14: I would recommend Bedouin,which serves African food and is in the expensive price range. Sentence15: I'm afraid there is no record for such trains, should we try for a different time? Sentence16: I am traveling to Cambridge and looking forward to try local restaurants. Sentence17: Can you give me addresss and phone number please Sentence18: Any arrival time would work so long as it gets to Bishops before 14:45. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System