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 phone number is 01223334200. I can also tell you that there is no entrance fee and its located in centre on saint andrew's street. Sentence2: Perfect. I'll need 2 tickets. Sentence3: Great, can you give me the reference number. Also can you give me some information on emmanuel college please? Sentence4: I have to get to cambridge from london kings cross for a family matter, can you help me book a train? Sentence5: Your reference number is : TD9C5XQU . What else can I do for you today? Sentence6: Yes, I can help. What day do you need to leave? Sentence7: TR1681 leaves at 19:17 and arrives 51 minutes later. How is that? Sentence8: I would like to leave on Sunday. Sentence9: Can you give me the phone number, entrance fee, and address of emmanuel college, please? Sentence10: I would like to leave after 17:15 on sunday. Sentence11: I will book that for you now. Sentence12: Is there a certain time you want to leave after or arrive by? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User