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: Ok great! That's all I needed. Thank you Sentence2: I would like the hotel if it has a 4 star rating. Sentence3: It's located in the east. Their phone number is 01223323737. Is there anything else I can help you with? Sentence4: Hi I need a hotel that is in the east. I don't need free parking. Sentence5: There are is one hotel and six guesthouses in the east. Would you like more information any particular establishment? Sentence6: You are very welcome. I'm glad I could assist. Sentence7: What day and time would you need that reservation to be? Where will you be traveling to with the taxi? Sentence8: Can I please have the phone number and area for Pizza Hut Fen Ditton? Also, the guesthouse we booked is 4 stars correct? Sentence9: I would love to try some french food while I am there. Could you help me find a restaurant? Sentence10: I'm sorry, but there is no 4 Star hotel in the East. May check different area or guesthouse? Sentence11: Unfortunately no. Would you like to try a shorter duration, or maybe a different checkin day? Sentence12: Just to commute between the two places. Sentence13: Yes, I would like a reservation for 5 people and book me a taxi that leave the restaurant by 16:15. Sentence14: There are no french restaurants in that area would you like to try something else? Sentence15: I guess so. I guess maybe a good italian place would work. Sentence16: Okay, your taxi is booked and the car will be a black bmw and their contact number is 07478029188. Is there anything else you need? Sentence17: Yes, can you tell me if that guesthouse we booked has 4 stars? Sentence18: What types of guest houses are there in the east? Sentence19: A and B Guest house is in the the moderate price range. It is on 124 Tenison road. Would you like me to book it? Sentence20: Do they have rooms for 5 people. for 2 nights, starting Saturday? Sentence21: Yes it is rated 4 stars. Sentence22: Okay, what about 1 night? Sentence23: I have six, what price range are you looking for? Sentence24: I am not particluar. Sentence25: Yes, that did the trick. You're booked with reference number 0NDTR3EG . Is there anything else I can help you with? Sentence26: How about Pizza Hut Fen Ditton? Would you like to make a reservation? Question: Who has spoken the sentence 24? (A) User (B) System
Output: 


Answer: (A) User