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'd like to leave after 11:45 on Thursday, please. Sentence2: Do you have a particular type of cuisine in mind? Sentence3: There's a train scheduled on Thursday from Peterborough to Cambridge, leaving at 11:19 and arriving at 12:09. Will this work for you? Sentence4: I recommend Restaurant Two Two. It is a French restaurant in the north. The telephone number is 01223351880. Would you like me to book a reservation? Sentence5: The next train departs Peterborough on Friday at 05:19 and scheduled to arrive in Cambridge by 06:09. Do you want a different departure time? Sentence6: Thank you so much for your help. Sentence7: Thank you. Yes, I do need a place to dine. I would like an expensive restaurant in the north. Sentence8: What type of food is it? Sentence9: Yes, I can hear them. How else can I help you today? Sentence10: I need a train from peterborough going to cambridge. Can you help me? Sentence11: With our schedule, we can only go on a train that leaves after 11:45. Is there one leaving later? Sentence12: That sounds great. Can you please book 7 tickets on that one? Sentence13: There is a train that leaves at 12:19 will that work? Sentence14: Happy to help, goodbye.. Sentence15: Any type is fine. I'd also like the phone number of the restaurant. Sentence16: Booking was successful. Reference number is 3854SJZ8 . Do you need help with anything else? Sentence17: Thank you. I missed that before. Screaming kids, you know. Sentence18: As mentioned before they are French. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User