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: There are over 200 trains going to Cambridge on Thursday. Where will you be departing from? Sentence2: Yes, please. I am also looking for a place to stay, ideally a hotel with a 4 star rating in the moderate price range. Sentence3: I would like to go to Cambridge Sentence4: I need you to find me somewhere to stay with a 4 star rating in the east, moderately priced, and with wifi. Type doesn't matter. Sentence5: I hve booked it as requested, the reference number is 3W8OKRO8, any further questions today? Sentence6: I still have some requests for the hotel, before you book it. Sentence7: Then in that case, I recommend the TR0209 which departs from Kings Lynn at 16:11 and gets into Cambridge at 16:58. Would you like me to book it for you? Sentence8: Ok I Am going to book a cheaper hotel for you ,have a good day,thank you. Sentence9: You're welcome. Please have a nice day and thank you for calling. Sentence10: Would you help me book a train for Thursday, please? Sentence11: That doesnt matter. Choose your best recommendation and please book it for 2 people on thursday for 5 nights. And do remember to send me the reference number Sentence12: Okay what can I do for you? Sentence13: I think that covers everything. Thanks for your help. Sentence14: I would like to leave after 15:45. Sentence15: I will be leaving from Kings Lynn. Sentence16: There are 3 in the east area. Do you need free parking? Sentence17: That narrows us down to about 19 trains. Do you have a time you would like to leave after or arrive by? Sentence18: Yes, where would you like to go to? Sentence19: I would like a cheaper hotel. Sentence20: There is nothing in the price range you mentioned. Would you be willing to stay at a cheap hotel or an expensive hotel? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System