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: Certainly! What day are you traveling? Sentence2: which side would you like to be? Sentence3: That's all I needed to know about the train. Thank you. I'm also looking for a moderately priced place to day with four stars. Sentence4: That sounds great. Please book it for 8 people for 4 nights, starting on Wednesday. Sentence5: Do you have a preferred arrival or departure time? Sentence6: You're welcome. Enjoy your trip! Goodbye. Sentence7: how about one that is in the cheap price range Sentence8: Booking was successful. Reference number is : Z01W0H74 . Is there anything else I can help you with? Sentence9: the area doesn't matter but make sure its a hotel and not a guesthouse including free wifi. Sentence10: That's all I need, thank you so much! Have a nice day! Sentence11: My meeting is on Wednesday. Sentence12: Can you help me find a train going to cambridge departing from norwich? Sentence13: Train TR2379 departs at 17:16 and arrives at 18:35. Will this work for you or would you like an earlier time? Sentence14: I would like to arrive by 19:30. Sentence15: I'm unable to find anything that meets all of your criteria. Can we adjust your price range to find the appropriate accommodations? Sentence16: How about The Cambridge Belfry? It is cheap, has four stars, and has internet. Shall I make a booking for you? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User