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: Yes! There are quite a few. Do you have a preference for type of food? Sentence2: You are most welcome! Sentence3: Yes, can you provide me the address of Hakka? Sentence4: I don't need a reservation right now, but I am looking for a train. I need to leave Wednesday after 15:45. Sentence5: That's all actually. Thank you for the assistance. Sentence6: There are two, one is called Hakka and another is the Hotpot. Would you like a reservation at one of these restaurants? Sentence7: I am looking to leave on wednesday after 15:45 and should depart from cambridge and arrive at london kings cross. Sentence8: Is there a good restaurant on the north end of town? Sentence9: Is there anything else I can help you with today? Sentence10: The soonest after 15:45 is TR3843, departing Cambridge at 17:00 and arriving in London at Kings Cross at 17:51. Will that meet your needs? Sentence11: Yes that would be fine. thank you Sentence12: I have many options for you. Where are you going and from where are you departing? Sentence13: An expensive chinese restaurant please located in the north Sentence14: It's Milton Road Chesterton, postcode cb41jy. Phone number is 01223568988. If you'll tell me how many people and when you'll be dining, I'll be happy to book it for you. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System