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: Great. Now I need somewhere to stay. I want an expensive place with 2 stars plus parking and wifi too. Sentence2: express by holiday inn cambridge is the only available hotel we have. Would you like me to make the reservation? Sentence3: 1 person and 12:15 on Sunday or Thursday. I also need a reference number Sentence4: Could you try again, just want something on Thursday, at 12:15. Sentence5: Yes, I'd like to find one in the centre. Sentence6: I am looking for an expensive Indian restaurant. Sentence7: How about the curry garden that is in the centre of town and serves indian food? Sentence8: Neither of those days seem to be available. Would you like me to try a different restaurant. Panahar is expensive and in the same area. Sentence9: There seems to be an error in the restaurant booking system. Do you need anything else, like a hotel or taxi in the meantime? Sentence10: Thanks for letting me assist you today. Enjoy your trip! Sentence11: Is Curry Garden expensive? If so, I want to make a reservation for Sunday. Sentence12: Yes it is expensive. Their address is 106 Regent Street City Centre. How many people shall I reserve it for and at what time? Sentence13: I can reserve a table for 1 on Thursday at 12:15. Should I book it for you? Sentence14: Yes, please, for 4 people, 4 nights. Same day as the restaurant booking. Sentence15: There are several options, is there a specific area you prefer? Sentence16: Could you please try again? I really need that reservation. I'd prefer it for Sunday but if they can't accommodate that time, Thursday will suffice. Sentence17: No thank you, you have been very helpful but please use you're and your in the right places. Sentence18: Your all set, the reference number is 6BRFT2OA, is there anything else I can do for you today? Sentence19: Good news, the booking system finally worked and I made the reservation! Your reference number is I3VJP80T Sentence20: Yes I already asked you to do it!! And send the reference number! Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System