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, I need a train from cambridge to stevenage on wednesday. Sentence2: Please book 3 seats and send the reference number. Sentence3: I sure could use a nice hotel to stay in. Can you find me one in the east? I don't need free WiFi. Sentence4: Yes it does. Would you like reservations? Sentence5: There are three cheap options in the east. Leverton House, Autumn House, and Allenbell. Would you like the phone number for any of them? Sentence6: Have a nice day. Sentence7: Thank you that is all I needed. Sentence8: I don't need hotel reservations. I just need address, price range, star of the hotel. Sentence9: Does it include free parking? Sentence10: When would you like to arrive by? Sentence11: No preference just fine a train that leaves after 17:45. Sentence12: Yes, that is a hotel. Should I make a booking for you? Sentence13: I am look for a hotel on the east with free parking. Sentence14: I'd be happy to book it for you! I just need to know what day you're arriving, how many nights you're staying, and the number of people in your party. Sentence15: I have train TR0609 leaving at 19:21 and arriving at 20:10. Sentence16: That will be okay. Can you book that? Sentence17: What time would you like to travel? Sentence18: It's a 2-star hotel. Sentence19: Is that a hotel? Sentence20: It is a 2 star expensive hotel, their address is 15-17 Norman Way, Coldhams Business Park, phone number is 01223866800. Is there anything else I can assist you with? Sentence21: We need to leave after 17:45. Sentence22: The express by holiday inn cambridge is in the east with free parking and interenet. It is in the expensive price range. Would you like to reserve a room? Sentence23: how many stars? Sentence24: the reference is LIB89A1W . Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System