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: I would just to arrive by the time for the reservation. Can I have the contact number and car type please? Sentence2: Hmm, I'm not sure. Can you pick one for me? I need it to be in the city centre. I need a phone number, postcode, and attraction type. Sentence3: I'm looking for someplace fun to visit in town. Sentence4: You're welcome have a great day Sentence5: Okay! When would you like to depart? Sentence6: Yes please 6 people, at 14:45 on Thursday. Sentence7: I booked you a black volkswagen and the contact number is 07208024782. Is there anything else I can help you with today? Sentence8: Booking was successful. The table will be reserved for 15 minutes. Reference number is : TP86DT67 . Sentence9: Sure! it's an indian restaurant located in the east. Do you want a reservation? Sentence10: Can you find a restaurant by the name of sitar tandoori? Sentence11: Well, there's lots of fun things to do including boats, museums, sports complexes, architecture, cinema and theaters. Do you have something specific in mind? Sentence12: the cambridge corn exchange is a theatre. Postcode is cb23qe and phone number is 01223357851. Sentence13: i also want to book a taxi to commute between the two places. Sentence14: No, that's all. Thanks, goodbye. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System