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: i have 7 british restaurants in the centre of town. which price range would you prefer? Sentence2: That sounds good. What is their postcode and what is their phone number? Sentence3: Postcode is cb41ha and phone number is 01223369299. Would you like for me to make a reservation for you? Sentence4: Thank you, that will be all. Sentence5: TR7747 leaves cambridge on friday and arrives in norwich at 16:55. Would you like me to book it for you? Sentence6: I am looking a train arriving by 17:45 that leaves on Friday. Sentence7: I hope you enjoy your dinner. Sentence8: Thank you so much. I appreciate it. Can you also help me find a British restaurant in the centre of town? Sentence9: Leaving cambridge and going to norwich. Sentence10: sure, what is your destination? Sentence11: How about midsummer house restaurant? Sentence12: expensive price range will be good Sentence13: Booking was successful, the total fee is 52.8 GBP payable at the station . Reference number is : 8MRK0X44 . Sentence14: Yes, book for three people, please. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User