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: They do not have free parking but they do have free internet. Sentence2: I would like a guesthouse. Location and price aren't important. Sentence3: Ok, thank you. This is all the information I need right now. Sentence4: Well that does not work,can I get the phone number anyway? Sentence5: Oh before you book, please advise on whether they have free parking or not. Sentence6: I am looking for a hotel with a star of four with free wifi. Sentence7: Yes. I need a train leaving anytime after 17:45 in cambridge and going to stevenage on monday. 2 tickets and the ref would be great Sentence8: Booking was successful, the total fee is 25.6 GBP payable at the station . Reference number is : D4AK1SN3 . Sentence9: and what area is it in? Sentence10: I hope we were able to help you today. Sentence11: What day will you be checking in? Sentence12: Okay. I would recommend the A and B Guest House on the east side of town. Sentence13: It is in the east. Is there anything else you need? Sentence14: We have 21 hotels and guesthouses that match those requirements. Do location or price matter? Sentence15: Ok, please book for 4 nights beginning thursday for 2 people. Thank you. Sentence16: their phone number is 01223315702. is that all? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System