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: Thank you so much for your help today. Sentence2: Yes, I would like to stay in the west please. Sentence3: I am also looking for help finding a train to stansted airport for Sunday departing from Cambridge. Sentence4: There is one guesthouse and one hotel that fits your criteria. Both have free internet and parking. Do you have a preference? Sentence5: I have found 10 hotels that are cheap in the area. Is there a certain part of the city you would like to stay in? Sentence6: The Cambridge Belfry meets your criteria. Would you like to make a booking? Sentence7: Are they 3 star hotels? Sentence8: train TR1262 will arrive at 08:08 would you like me to book seats? Sentence9: Yes, we'll need tickets for everyone in the party. Sentence10: I would like a hotel please. Sentence11: okay, reference # isN5S2FRHG, 32.32 GHP is payable at the station Sentence12: Yes please for 4 people for 2 nights starting on friday. Sentence13: Yes they are both 4 stars. Do you have a preference of hotel or guesthouse? Sentence14: You're welcome. Have a great day! Sentence15: Sure. What time would you like to travel? Sentence16: success! confirmation number is 44URFTUC . Can I help you find anything else? Sentence17: it should arrive by 09:00 Sentence18: I need a cheap place to stay please. Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System