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: Please. I need a reservation for 8 people at 12:45 on Sunday. Sentence2: Booking was successful. Reference number is : EI63A77M . Is there anything else I can help you with? Sentence3: no, it should be a guesthouse though. Sentence4: Yes for 8 for 3 nights starting sunday Sentence5: There is only one Korean restaurant in all of Cambridge, but it's expensive, not moderate. Sentence6: la tasca is a spanish restaurant located in the centre. Can I book that for you? Sentence7: I'm hoping to find a moderately priced korean restaurant. Sentence8: Yes, I would also like a hotel with free wifi in the moderate price range. Sentence9: No that is all the help I need today. Thank you Sentence10: Can you run one more search for korean cuisine in the centre area please? Sentence11: Okay what about spanish cuisine then? Sentence12: Alright, the table is booked for 12:45 and will be reserved for 15 minutes and your reference number is GIBFWDNM . Can I help you with anything else? Sentence13: Do you have an area in mind? Sentence14: I'm sorry, we don't have anywhere that matches that description. Is there somewhere else I can try and find for you? Sentence15: a and b guest house is in the moderate price range. Should I book it? Sentence16: Sure thing. Enjoy your stay Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User