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: I'm glad I could be of help. Please contact us again, anytime. Good bye. Sentence2: Hi! I'm looking for a restaurant called Stazione Restaurant and Coffee Bar. Sentence3: Thanks, I am also looking for a place to stay. Sentence4: There are 9 options here. What area would you prefer? Sentence5: Is there a guesthouse in the center? It would be more convenient near the restaurant. Sentence6: Okay the booking was successful. Reference number is VKKM9KO1 . Sentence7: I will also need a taxi to commute between those two places. Could you book me one. Sentence8: Sure, it's in the centre of town. Do you want to book a table there? Sentence9: Sunday at 19:00 please. Sentence10: Please book a table for 4 people. Sentence11: Great, I can help with that. Do you have an area and price range you want? Sentence12: No, that is all I need today. Thanks again for all your help! You've been wonderful! Sentence13: Sorry forget area, that doesnt matter. Just choose the first option out of the previous 9 you mentioned and book it with the specifications I mentioned earlier. Sentence14: Thank you for putting up with me! Sentence15: The Acorn Guest House meets your criteria. Should I book it for you? Sentence16: I don't have any guesthouses in that area meeting your requirements. Would you like me to check in a different area? Sentence17: It's been my pleasure. Can help with something else? Sentence18: Yes. I need it booked for 4 people on sunday and for 2 nights Sentence19: in the type of Guesthouse, 4 star rating in the moderate price range, and free parking, i want to book that for the same 7 people, for 2 nights Sunday please Sentence20: Sure, I can do that. What day and time would you like me to book? Sentence21: I have booked a white lexus that will get you to the restaurant by 19:00. Phone number is 07132308667. Sentence22: I have booked rooms for 4 for 2 nights starting Sunday and the Acorn Guest House. Your reference number is 7R08F7KY . Is there anything else today? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User