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: There are 22 matching entries. Do you want me to book a train for you? Sentence2: Can you book that for 1 person for 3 nights starting on monday. Sentence3: I am looking to leave at 13:15 from peterborough. Sentence4: Oh, sorry need to go to Cambridge and will be traveling on Monday. Sentence5: Hello! Can you please recommend a 3-star hotel? Sentence6: We don't seem to have a guesthouse that has everything you want. There is a hotel that has the other things. Would you like that? Sentence7: Okay, I will still be needing your destination and day of travel Sentence8: No can you just tell me the arrival time of the first train that departs after 13:15? Sentence9: No thanks, I'm all set with everything. Thank you for your help. Sentence10: Reference number is : SEMSYF2T . Is there anything else? Sentence11: There are 6 places to choose from. Is there a certain price range or area of town you want to be in? Sentence12: Glad to be of help. Have a great day. Sentence13: What is your destination, and what day do you wish to travel? Sentence14: It is a guesthouse, not a hotel sorry. The pricerange is moderate. It has 3 stars, free wifi, and parking. Would you like to book it? Sentence15: I also need a train from Peterborough. Sentence16: Would you like me to reserve that for you? Sentence17: The first arrival time is 14:09. Sentence18: In the west, please. It should be a hotel type, please. Sentence19: Thank you for using the Cambridge TownInfo Centre. Goodbye! Sentence20: Okay that's great. Thank you very much. Sentence21: Okay goodbye you can end the conversation Sentence22: Can you tell me a little about that hotel please? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User