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: I'm looking for a place to stay that is cheap located in the north. Sentence2: Okay! Would you like to stay at City Centre North B and B, or at Worth House? Sentence3: What area would you like to stay in? Sentence4: have a great day too Sentence5: Indeed there are. In fact, there are 11. If you'd like an inexpensive, 4 star guesthouse with free internet and free parking, Worth House is a good choice. Sentence6: Booking was successful, the total fee is 40.4 GBP payable at the station. Reference number is : H4BIFD0U . Will there be anything else today? Sentence7: A guesthouse has already been booked for you. Is there anything else I can help you with today? Sentence8: I have made the booking the Reference number is E6UVD9OL . Is there anything else i can help you with? Sentence9: Oh! It looks like we've already booked Train TR8167 for your group of 4. Your reference number is H4BIFD0U . Is there anything else I can help you with today? Sentence10: That's all I need, thanks so much for all of your help! Have a great day! Sentence11: Thank you and have a great day. Goodbye. Sentence12: Yes please, for 4 people. How about the TR8167 please. Sentence13: Sure, I need a reservation for 4 people and 2 nights starting on Monday please. Sentence14: Would you mind finding some info on a train into Cambridge for me? Sentence15: Their is a train that leaves Monday at 21:29. it costs 10.10 pounds and it's a 38 minute trip. Would you like me to book that for you? Sentence16: Hello. I'm hoping to find a guesthouse in the north part of Cambridge. Are there any? Sentence17: I will also need a place to stay. Sentence18: I also need a hotel booking. Sentence19: Yes, please. Can you book me 4 tickets? Sentence20: you too and thanks again Sentence21: There are 2 trains that meet your criteria. The TR8167 and the TR9693. Would you like me to book one of them for you? Sentence22: I could do that for you. Can you give me a time ? Sentence23: I would prefer the centre. Sentence24: I'm looking for a place to stay that is cheap located in the north. Sentence25: Yes, we will be coming from bishops stortford on Monday. I would like to leave after 19:30. Sentence26: I would suggest this one city centre north b and b. Sentence27: I also need a train from Bishops Stafford to Cambridge. Sentence28: Okay, there is already a booking for you there. The reservation number is E6UVD9OL . Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System