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 arrive by 18:00 if possible. Sentence2: Hi, I need a train that departs from cambridge. I need to leave after 15:00. Sentence3: Not a problem! Have a great day! Sentence4: Thanks for your help today. Sentence5: Yes for Sunday for 3 nights for 3 people please. Sentence6: I have train TR6357 that leaves at 17:06 and arrives in Peterborough at 17:56. Would that work for you? Sentence7: I have 18 trains available. What time would you like to arrive? Sentence8: I don't know the area. Can you suggest something for me? Sentence9: Yes. Let us know if you need help. Sentence10: The Alexander Bed and Breakfast is lovely. Would you like me to reserve rooms for you? Sentence11: It was my pleasure. Sentence12: Thanks. I also need a place to stay. Can you find a guesthouse with free parking? Sentence13: There are many guest houses that fit this criteria, do you wish to stay in a certain area? Sentence14: I'll deal with the train, thank you. I want a fancy expensive guesthouse, does that narrow it down any? Sentence15: There are many trains that depart Cambridge at that time, what day do you need the train and where are you going? Sentence16: Please try for something in the cheap price range. Sentence17: Would you like me to book the train? There are 21 guesthouses that offer free parking do you have an area you'd like to stay or price range? Sentence18: ok cool go away now Sentence19: i am going to peterborough on tuesday. Sentence20: I have no expensive guesthouses in Cambridge. Is there another price range you would be willing to accommodate? Sentence21: Booking was successful. Reference number is : MS9KDSFF . Is there anything else I can help with ? Sentence22: No. Thank you!! Sentence23: I hope you have a great trip. Sentence24: Thank you, you as well! Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System