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: yes sure its 56 saint barnabas road Sentence2: You are welcome, enjoy your stay. Sentence3: In the Centre is fine. Can you please check to see if any offer internet? Sentence4: Is there anything else I can help you with? Sentence5: The booking was successful. The table will be reserved for 15 minutes. Your reference number is : 23DPN5A7 . Is there anything else I can do to assist you? Sentence6: I would like a 4 star guesthouse with free parking. Sentence7: Thank you for all your help. Have a great day!! Sentence8: I have one entry for bangkok city would you like more information? Sentence9: It is expensive. Do you need something less expensive? Sentence10: Okay. What area are you interested in and what is your desired price-range? Sentence11: There are 16 four-star guesthouses with your requirements. Are you looking to stay in the centre of town? Sentence12: Yes, please. Is it expensive? Sentence13: A grey lexus is booked for you. The contact number is 07699737690. Sentence14: I see one option here. It is alexander bed and breakfast. Would you like to book? Sentence15: Does the hotel also offer internet? Sentence16: I'll need a taxi to take me to bangkok city from the hotel and arrive by 11:00. Sentence17: I also need a place to stay Sentence18: I'd like to find a Thai restaurant in the center. Sentence19: I do not want to book it at this time. Sentence20: No, that is perfect. I would like to book a table for 5 people on Wednesday at 11:00. Sentence21: Yes, alexander bed and breakfast has Internet. Do you want to book it? Sentence22: What is the address of the guesthouse? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User