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: Could I get the phone number, postcode, and the area that The Cost of Clare Hall is located in, please? Sentence2: I've found 18 possible matches based on your preferences. Would you like to add additional preferences for your hotel? Sentence3: Great. Thank you. That's all I need. Sentence4: I need a hotel that's cheap with free parking. Sentence5: Okay great. I'd also like to find a guesthouse that has a 4 star rating. Sentence6: The phone number is 01223332360, postcode is cb39al, and the area is west Sentence7: That would work, can you please book it for 1 person for 5 nights starting from Monday? Sentence8: I would like some information on an attraction called Clare Hall. If you could provide address and cost of admission that would be great. Sentence9: The Cost of Clare Hall is free, so you don't need to worry about that. The address is herschel road. Any more questions? Sentence10: All right, your room is reserved at the Alexander for four nights. Your reference number is GI3N4VIV . Sentence11: Four nights would work. Sentence12: I apologize but could you book for another day or for a shorter stay? Sentence13: Alexander bed and breakfast is cheap with free parking and internet. It is in town centre. Does this suit your needs? Sentence14: Great! Glad we could help! Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System