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 can most definitely help with that. Is there a certain type of food you would like to try? Sentence2: Yes. Please send be the phone number, address and postcode. Sentence3: Yes, can you book that train for 2 people please? Sentence4: Their number is 01223311053, postcard is cb21uf and they are located on Bridge Street City Centre. Sentence5: I have over 800 possible matches for that request. Where will you be departing from? Sentence6: I am leaving from Kings Lynn on Saturday. Sentence7: Cote is a French restaurant in the centre of town. It is expensive. Would you like me to book you a reservation? Sentence8: Your train has been booked. Reference number CYW95CE2 . Is there anything else I can help you with? Sentence9: Great, thanks. I also need a train. I need to leave cambridge after 12:15. Sentence10: I'm looking for an expensive restaurant in the city centre. Sentence11: I am happy to be able to help. Have a nice day. Goodbye. Sentence12: Yes, I think I would like to try French food. Sentence13: No, thank you. That is all I need today. Sentence14: I have a train TR4003 leaving cambride at 13:00 and arriving at london kings cross at 13:51. Would you like me to make reservations? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User