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: No, thanks. I will need a train to Bishops stortford, though. Sentence2: The address of this Cityroomz is Sleeperz Hotel, Station road. Postcode cb12tz. Would you like help booking a stay? Sentence3: No that was all I needed for today. Thanks! Sentence4: What is the address? Sentence5: I will be happy to book you on train TR6809 leaving at 7:29 and arriving at 8:07. How many tickets would you like for this train? Sentence6: Okay I have not booked a train yet, is there something else you'd like me to look up for you? Sentence7: Cityroomz is located in the centre and is moderately priced. It is the only hotel to your specifications. Shall I book you a reservation? Sentence8: There are four trains that fir your criteria. The departure times are 05:29, 07:29, 09:29 and 11:29. Would you like me to book for you? Sentence9: Is it a mid-budget hotel? I'm also looking for a hotel that's located near the centre. Sentence10: Yes, it does! Sentence11: Great! Thanks for allowing me to assist you! Goodbye! Sentence12: Actually hold off on that part, I'm not sure how many tickets I need yet. Sentence13: Cityroomz is a 0 star hotel available. Sentence14: Does it have internet? Sentence15: I am looking for a zero star hotel in Cambridge. Sentence16: I would like to depart on Friday from Cambridge. I'd like to arrive at Bishops Stratford by 12:30. Can you tell me a departure time please. Sentence17: Yes,please book for 07:29. Sentence18: Sure! Which day and time would you like to depart or arrive by? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User