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: Please book the Varsity for 5 people on tuesday at 17:00. Sentence2: I am showing 5 architecture in the centre. I could recommend all saints church. Sentence3: I am showing two international restaurants near the centre. The Varsity Restaurant and Bloomsbury Restaurant. Would you like more information on either one? Sentence4: Unfortunately, there are no portuguese restaurants that meet your requirements. Can I look for something else for you? Sentence5: How about portuguese food? Sentence6: You're welcome. Have a nice day. Sentence7: I don't have anything that meets those criteria. Can I check something else for you? Sentence8: Sure, your booking was successful. The table will be reserved for 15 minutes, reference number E8SV1E0D . May I assist you with anything else? Sentence9: I am showing 21 restaurants in that area and price. Is there a certain cuisine you would enjoy? Sentence10: That is all thanks. Sentence11: Yes, please find a restaurant in the moderate price range and same area as the attraction. Sentence12: How about some architecture to visit in the center? Sentence13: I would like to find some entertainment in the centre of the city. Sentence14: How about international food? Sentence15: Ok, what's the phone number? Sentence16: They are reachable at 01223452587, anything else that I can assist with? Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System