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: That is all I need for today. Thank you for your time! Sentence2: Great, thanks for all your help! Sentence3: Can you provide me with the address and phone number of a museum in the centre? Sentence4: Yes I would like information on the Cambridge Belfry. Sentence5: Thank you I am also looking for an attraction in the centre of town too Sentence6: Yes the Belfry is located in the west and is in the cheap price range but is rated highly at 4 stars. Would you like me to book that for you? Sentence7: Is there anything else I can help you with today? Sentence8: We're happy to be of service. Enjoy your time in cambridge! Sentence9: Yes, I would. I'd like to book a room for 3 nights starting on Saturday for 1 person. Sentence10: Primavera is located at 10 King S Parade. The phone number is 01223357708. Sentence11: There are many attractions available, including architecture, college, and museum. Are you looking for a specific type of attraction? Sentence12: I've successfully booked your room at The Cambridge Belfry (Reference #RQ3Z4L32). Can I help with anything else today? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User