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 entries have now been narrowed down to 38. Where will you be departing and at what time do you want to leave? Sentence2: There are four theatres in the centre that you could visit. Sentence3: There are many! What day will you be traveling? Sentence4: And, what is the postcode and entrance fee, please? Sentence5: I would like to find a train leaving from Peterborough. Sentence6: Two people going to cambridge. We'd like to arrive by 12:45. Please book 2 seats and give the refernce number. Sentence7: I will be leaving on Friday. Sentence8: TR6691 leaves peterborough at 11:48 and arrives in cambridge at 12:38. Your total for 2 ticketsis 33GBP, payable at the station, and the confirmation is 5W98EJ2Y . Is there anything else? Sentence9: Which one would you recommend? Sentence10: Okay would you like a specific area? Sentence11: Sure- what is the entrance fee, phone number, and postcode? Sentence12: Please let us know if there is any way we can help you in the future. Have a great day. Goodbye! Sentence13: Actually, I could use some help finding a theatre to visit in town while I am there. Sentence14: Okay thank you, thats all i need for now. Sentence15: Yes, I'd like a place in the center of town, please. Sentence16: I'm sorry, the postcode is cb23qe, but the entrance fee is not listed online. You would have to call them at 01223357851. Sentence17: the cambridge corn exchange is one of our most popular theatre. Would you like any more information? Sentence18: The phone number is 01223357851. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System