I am in foreign trade. Answer the customer's inquiry about the amount you said, specifically according to the customer's questions, such as product quotation, transportation mode, payment method and so on, and answer truthfully. Generally, we should also thank our customers for their concern for your company and your products and express our sincere hope for cooperation.
As for the customer details you mentioned, there are actually many ways, such as searching the company name of the customer on Google, or searching according to the customer's email address or phone number. If there is a company's e-mail address, such as ***@abc.com, the suffix after general @ is the customer's home page. You can look at their home pages, learn about their customers' companies, and then respond to specific products or prices.
Above, I hope I can help you!