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: Where will you be going? Sentence2: Yes, thanks! Sentence3: Thank you, I hope you have a good day as well! Sentence4: Are there restaurants in the city centre which serve North American cuisine? Sentence5: That's just perfect. Can you buy our tickets? Same group of people as the gourmet burger kitchen. Sentence6: Have a good day. Thank you for using our service. Sentence7: Train ID TR1898 will have you arriving at Stevenage at 14:10. It leaves Cambridge at 13:21. Sentence8: There is one expensive restaurant called gourmet burger kitchen would you like me to book that for you? Sentence9: I have purchased 8 tickets for you. The reference number is PWMD3SIU . Sentence10: What day and time would you like me to book it? Sentence11: Your booking was successful. The table will be reserved for 15 minutes only. Your reference number is HJCYIRG6 . Can I help you with anything else? Sentence12: Yes. I am looking for a train that departs from Cambridge on Monday. Sentence13: I need it booked for 8 people on Sunday at 15:45. I'd also like to have the reference number. Sentence14: Thank you that is all I needed today. Sentence15: I need to get to Stevenage by 16:45. Sentence16: It's been a pleasure. Good day and goodbye. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User