Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: Thank you! Your car is a grey lexus and the contact number is 07248267753. Sentence2: Can you give me the contact information for The Riverside Brasserie? Sentence3: Thank you. I would also like to book a taxi to commute between the two places. Sentence4: Check the centre, can I get the phone number, entrance fee, and postcode of one? Sentence5: I'd be happy to help you. Which place will you be departing from? I will also need to know the time you'd like to leave. Sentence6: The restaurant should be in the moderate price range. Sentence7: Great, thank you. Are there any colleges in town? Sentence8: There are 5 restaurants that serve modern European food, all located in the centre area. Did you have a particular price range in mind? Sentence9: The Riverside Brasserie and De Luca Cucina and Bar are both in the moderate price range. Do you have a preference? Sentence10: Certainly. They are located at Doubletree by Hilton Cambridge Granta Place Mill Lane, phone number 01223259988. Sentence11: There are 18, actually! Is there a certain area you'd like to check? Sentence12: Christ's College is free. The phone number is 01223334900 and the postcode is cb23u. Sentence13: I will be departing from Christ's College and need to leave by 06:15 please. Sentence14: I am looking for a restaurant that servers modern european food. Question: Who has spoken the sentence 7? (A) User (B) System
A:
Answer: (B) System