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: ok thanks and have a great day Sentence2: Oh, ok. I really don't want to stay at a guesthouse though. Can you recommend a hotel instead? Sentence3: alexander bed and breakfast is a guest house in the centre area. Would you like to book a room? Sentence4: Keep the snarky comments to yourself. Sentence5: What is the train schedule from birmingham new street like? I need to arrive at 13:45. Sentence6: It doesn't matter. What do you recommend? Sentence7: I need the travel day to be Sunday. I'll be going to Cambridge and arrive by 13:45. I'll be leaving from Birmingham New street. Sentence8: What is the travel time on that train? Sentence9: I am planning a vacation and really could use some help finding a good place to stay in town. I've never been to Cambridge before. Sentence10: Booking was successful. Reference number is : 36N9VCAD . Is there anything else I can help with? Sentence11: which side of town do you prefer and what is the price range? Sentence12: Yes, thanks very much! Have a great day! Sentence13: You too! Thanks so much for all the help. Please end the convo and read the directions next time. thanks Sentence14: Train TR7468 will arrive at 13:23. Will this work for you? Sentence15: You are quite welcome, thank you for using our services. Have we met all of your needs today? Sentence16: Where would you like the train to arrive, and what time will you be leaving? Sentence17: The Huntingdon Marriott hotel is a very nice place. Sentence18: It is 163 minutes on that train. Sentence19: Sounds good. Can you get me a room for 2 for 5 nights starting Sunday? Sentence20: Excellent. Thanks for all the help! Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System