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: Great. Thank you for all your help. Sentence2: Can you help me find a train out of Cambridge that leaves after 10:30? Sentence3: That train does not travel on Sunday, but TR8464 leaves at 11:21 if that will work for you. Would you like me to book you a ticket? Sentence4: Just give me the postcode please and tell me if they offer parking Sentence5: I sure can! The TR1502 leaves at 11:00. Would that work? Sentence6: The total fee is 71.68 GBP payable at the station . Reference number is : DSIQUE20 Sentence7: I recommend the Lensfield Hotel. It is 3 stars. Would you like to make a booking. Sentence8: Well yeah, I would need the reference number if you booked it? Sentence9: The hotel does offer parking and the postcode is cb21en. Sentence10: Thank you. I'm also looking for a hotel in the south area of town. It needs to be a hotel. Can you recommend any? Sentence11: Yes, that will work for me. Can you please make a booking for 7 people? Sentence12: You're welcome. Thank you for calling the Cambridge TownInfo Centre. Have a great day! Sentence13: I am looking to travel Sunday going to Stevenage. Does that train travel on that day? Sentence14: Yes,I will book it for 7,is there anything else I can do for you ? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System