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: The postcode is cb12tz and the phone number is 01223304050. Sentence2: Thank you, that is all for today. Goodbye. Sentence3: The Cityroomz hotel is in the moderate price range and in the centre. It also has internet. Would you like me to make a reservation for you? Sentence4: What is available in the centre? Sentence5: There's one restaurant called Cote, but it's expensive. Would this be fine? Sentence6: I need a french restaurant in the same area as well. Sentence7: No just the postcode and phone number will be fine. I need to find a french restaurant in the centre as well. Sentence8: Yes, I am looking for a place to stay. It should be a guest house. Sentence9: Yes and can I get the phone number please. Sentence10: I am not showing any guesthouse in the centre area in your price range. Would you like to try another type of hotel or area? Sentence11: Thank you. There are many guesthouses to choose from. What is your price range and what area would you like? Sentence12: Thank you for contacting Cambridge TownInfo centre. Goodbye! Sentence13: We don't have any guest houses in the centre. How about a hotel? Or an expensive one? Sentence14: The phone number is 01223311053. Sentence15: Lets try a hotel instead. Sentence16: I'm looking in the moderate price range and should be located in the centre. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System