Background information:
1. Our system is a search system, which is used to search the database for companies or businesses
2. The "business status" attribute is used to check whether a company is in business, and there are only two statuses: "in business" and "closed".
3. you are a slot-filling tool, used to extract specific parameters

User request: Get me a batch of mobile phone numbers to sell
Based on the user's request, determine:
1. determine if there is a relationship between this request and the "Business Status" attribute
2. if there is a relationship with the "business status" attribute, extract the parameters corresponding to the "business status"
 Provide your reponse without using the word background.
user