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 booked a red Skoda to pick you up and get you to Curry for your reservation. The contact number is 07087653240. Can I help with anything else? Sentence2: Terrific, thanks and have a great day! Sentence3: That sounds fine. Does it have actually street address? Sentence4: Thank you for using the Cambridge TownInfo center, and I hope you enjoy your time in our city! Sentence5: Please book a table for 3 at 15:30 on Saturday. Sentence6: Would you like a free one or a paid entry one? Sentence7: Great! Your reference number is QMHALXPG, is there anything else I can do? Sentence8: Can I get a taxi from the place to the restaurant, I would like to arrive by the booked time of 15:30. Sentence9: Ok. Could you help me find an Indian restaurant around there which serves Indian food, Sentence10: I am ok with either option. Choose one you think I would enjoy and let me know the address and postcode. Sentence11: No preference for price range, but would like to have availability on Saturday. Sentence12: I would suggest Curry Garden. If you tell me the time you would like booked and how many will be in your party, I'll check availability for you. Sentence13: I have 9 indian restaurants in the centre. Is there a price range you would like? Sentence14: That is the only address information I have, but if you have trouble finding them, you could call them at 01223334900. Sentence15: Howdy! I'm looking to visit some colleges in the city centre if there are any. Preferably ones near food. Sentence16: How about the Christ's College in the Center located on Saint Andrew's Street, postcode cb23bu. It has free admission. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User