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: The Lensfield Hotel is location on 53-57 Lensfield Road, postcode cb21en. Would you like to look at booking a room? Sentence2: Thanks for letting us assist you today! Enjoy your trip! Goodbye. Sentence3: You're all set; your reference number is: 0IKY6DF0 . I hope you enjoy your stay. Sentence4: Yes please I will be there three nights. Send me a reference number please. Sentence5: Thank you. That is all that I need. Sentence6: I need their entrance fee and phone number. Sentence7: Your taxi reservation on a blue Skoda was successful. The contact number is 07066636790. Sentence8: Should it be in the same area of town as the hotel? Sentence9: I'm looking for a theatre in the centre of town. Sentence10: I'll be there on Tuesday. Sentence11: Sure, I can do that. Can you let me know what days you would like to stay? Sentence12: I do not know the entrance fee but the phone number is 01223300085. Sentence13: I'd like to find the Lensfield Hotel. Sentence14: and for what time please? Sentence15: I will give the theatre a call, thanks. I also need help with a taxi between the hotel and the theater, please. Sentence16: Thank you. I am also looking for places to go in town. Sentence17: adc theatre fits those criteria. Would you like more information on it? Sentence18: I want to leave by 8:15. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User