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: Please specify the day and time you want your booking to be made. Sentence2: It is a indian restaurant in the centre area. It is expensive and the phone number is 01223354679. Do you need reservations? Sentence3: No, that's all I needed. Thanks a bunch! Sentence4: That sounds great. Can you book me a taxi to go between the two? Sentence5: I would like to leave downing college by 06:45. Sentence6: I'm glad I was able to help today! Sentence7: How about Downing college on Regent Street? It's free and located in the centre area. Sentence8: I am also looking for info an places to go, more specifically colleges in the centre area. Sentence9: There are five in the area. Did you have any specific requirements you were looking for? Sentence10: Yes please make a reservation for two. Also provide me with a postcode and phone number. Thank you! Sentence11: No could you recommend one please? Sentence12: The taxi has been booked. The taxi taking you to your destination will be a red Toyota. The number to contact them is 07987423433. Anything else I can help you with? Sentence13: I think I will book it myself instead, can I get the phone number and post code so I can though? Sentence14: Yes the postcode is cb21la and the phone number is 01223354679. Is there anything else I can help with today? Sentence15: I am getting the info in, I need a time of day though to get a taxi. Sentence16: I'm looking for a restaurant called Saffron Brasserie. What can you tell me about it? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System