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 and welcome! How about friday at 05:17? Is that time acceptable? Sentence2: I am looking for a train going to Cambridge. Sentence3: yes, that is perfect. Sentence4: You're welcome! Have a great trip! Sentence5: I have not been myself but hear it is nice. It serves Indian food on the west end of town. Would you like me reserve a table for you? Sentence6: Nope, that takes care of everything. Thank you! Sentence7: I've booked you 2 tickets on train TR5219 from london kings cross to cambridge on friday. The total fee is 47.2 pounds and your reference number is DVRX2C6V . Sentence8: Yes please, 2 people at 20:30 on sunday. Can I also get a reference number? Sentence9: Yes, please. Two tickets. Sentence10: I was able to book that table for you (Ref #UU2PWIV7). Can I help you with anything else today? Sentence11: It will cost 23.50 pounds and the travel time will be 51 minutes, would you like to book it? Sentence12: Thanks. A friend told me about a restaurant called the rice boat. Do you know it? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System