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: does it have free wifi and parking? Sentence2: You're welcome. Have a great day! Sentence3: You too, thanks! Sentence4: I need to leave after 8:15, please. I also need the travel time for that Sentence5: There are many trains available. Where is your departure and destination? Sentence6: Yes. The phone number is 01223866800. Is there anything else I can help you with today? Sentence7: Yes. The Express by Holiday Inn has both free parking and free wifi. Would you like to reserve a room? Sentence8: TR1062 leaves at 8:36 and the ride would last 79 minutes. Should I book that one for you? Sentence9: Thank you for using Cambridge TownInfo centre. Please consider us for your future travel needs? Sentence10: How about the Express by Holiday Inn Cambridge? Sentence11: I am looking for a hotel to stay at in Cambridge. Can you recommend a place on the east side? Sentence12: We have 19 options available to you. Is there a specific departure or arrival time you prefer? Sentence13: Could you please provide me the phone number of the hotel? Sentence14: No, I think I can do that myself. Thank you for all your help today. Sentence15: I am also looking for a train on Saturday. Sentence16: From cambridge to norwich. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System