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 would like to stay in the northern area. I don't have a specific price range, but the hotel doesn't need to have the internet. Sentence2: just one person please. Sentence3: I'd like to leave on Monday after 8:30. Sentence4: No problem. Enjoy your travels! Sentence5: Booking was successful on TR7409, the total fee is 23.6 GBP payable at the station. Reference number is : GSY1O89D . Can I be of any further assistance? Sentence6: Pick one for me. Book it for 1 person for 5 nights starting from wednesday. Sentence7: Yes, where would you like to stay and in what price range? Sentence8: Sure, the first train to london kings cross leaves at 9:00. Shall I book it for you, if so for how many people? Sentence9: I have several hotels and guesthouses available. Do you have a preference? Sentence10: How much is each hotel? Sentence11: They are each moderately priced. I don't have any more specific information. Sentence12: Hi. I need to find a hotel, can you help me? Sentence13: I prefer a hotel. Sentence14: Which day would you like to leave on? Sentence15: I am also looking for a train departing from cambridge that is going to london kings cross. Sentence16: That's all I need today, thanks! Sentence17: There are two hotels to choose from. Ashley Hotel and Lovell Lodge. Both are moderately priced and have wifi and parking. Sentence18: I was able to book you at the Ashley Hotel. Your reference number is CPBUEMWR . It is located at 365 Milton Road in the north. Their phone number is 01223350059. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User