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 will be leaving from Cambridge on Sunday after 19:30. Sentence2: Can you suggest some good architecture attractions? Sentence3: The phone number is 01223332360. Is there anything else I can help you with? Sentence4: Can I ask where you are leaving from? Sentence5: What day will you be traveling? Sentence6: I will be leaving Sunday after 19:30. Sentence7: Yes. I am looking for places to go on the west side of town. Sentence8: I need a train to Ely, please. Sentence9: I think that is all I need. Thank you for your help. Goodbye. Sentence10: I have train TR3544 leaving at 19:50 and arriving by 20:07. Would this work for you? Sentence11: Unfortunately, I'm not showing any architecture attractions in the west area. Would you like me to look in another area? Sentence12: OK. Can I help you with anything else today, then? Sentence13: What type of colleges are available? Sentence14: No need to book it. Sentence15: There are five colleges on the west side. Churchill college, Clare hall, and Magdalene college all have free admission. Do any of those interest you? Sentence16: Yes I have many colleges there. Can I suggest something for you? Sentence17: Clare Hall sounds like it would be nice. Can I get their phone number please? Sentence18: It was a pleasure to assist you. Thank you for using our service. Goodbye. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User