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: YEs its littlelamb5 . THanks Sentence2: Train TR2236 arrives by 17: 23, should I book that? Sentence3: Thanks for all your help today. I think that's it. Sentence4: How many people will be travelling? Sentence5: Booking was successful, the total fee is 300.39 GBP payable at the station. Sentence6: I need five tickets. Sentence7: No thank you, what time does the train leave Cambridge? Sentence8: I am planning a trip to Cambridge, looking for a place to dine. Sentence9: I need to leave Sunday from Cambridge and travel to Birmingham New Street, arriving before 17:45. Sentence10: Glad to have been of service. Thank you for using the Cambridge TownInfo centre. Have a great day. Sentence11: Great, thank you. Is there a confirmation number? Sentence12: How long is the journey between the two places? Sentence13: turkish is really good to me Sentence14: I prefer the moderately priced. Kindly book a table for 5 people for me for Saturday by 18:00. Sentence15: Thanks, I'm also looking for a train that leaves on sunday from birmingham new street. Sentence16: A table at Anatolia has been booked. The reference number is 4CKLSLAJ . Is there anything else I can do for you today? Sentence17: Sorry, there was an error earlier. The train you want is TR4905, leaving Cambridge at 15:01 and arriving Birmingham at 17:44. Sentence18: Yes, please make a booking. Sentence19: I can help with that. What type of cuisine are you interested in? Sentence20: The travel time is 163 minutes. Would you like to make a booking? Sentence21: What is the destination, time you want to leave and arrival time? Sentence22: We have three options available. Two are moderately priced while one is expensive. Do you have a preference? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System