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: Most of the hotels and guesthouses have free wifi. Is there a particular part of town that you're interested in? Sentence2: I am not showing anything would you like me to check in a different price range? Sentence3: I just need a moderately priced hotel with free wifi and parking. Sentence4: Are you sure you can't find any hotels moderately priced with free parking and free wifi anywhere? Sentence5: That address is Back Lane, Cambourne. The TR8636 departs Cambridge at 20:36, would you like to book a seat on that one? Sentence6: Thank you for all your help. That is all the information I need. Sentence7: I don't care what part of town it's in, but I would like it to be a hotel rather than a guesthouse, and I'd like it to be moderately priced. Sentence8: Yes, I'll need the address and I will also need a train from Cambridge to Norwich on Monday, leaving after 20:15 Sentence9: How long is the trip, and what time does it arrive in Norwich? Sentence10: I cannot find anything in a moderate price, but I found a cheap hotel for you. It's The Cambridge Belfry in the west. It has 4 stars. Is this alright? Sentence11: Glad to be of help. Thanks for using our service. Goodbye. Sentence12: Unfortunately there are no hotels or guest houses that meet those criteria. Would you like to try a different price range? Sentence13: I'm looking for a place to stay that offers free wifi Sentence14: the trip is 79 minutes long and it will arrive by 21:55. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System