Prompt Title: Returns Policy Update.

Based on the information you provided earlier, it seems that Boeing's argument is not reasonable or consistent with their own return policy. Here are some points you can consider including in your response to their argument:

1. Restocking is a standard industry practice and is explicitly included in Boeing's own return policy. By rejecting restocking and imposing a 100% restocking fee on the grounds of a "return without cause", Boeing is disregarding their own policy and creating an unfair burden on the customer.

2. Boeing's argument that you are not a "contract customer" and therefore not eligible for their return policy is incorrect. Your company has a history of purchasing orders from Boeing and is subject to the same terms and conditions as any other customer.

3. If Boeing insists on classifying your orders as "off-contract" and therefore not subject to their return policy, they must provide evidence of any alternative terms of sales that outline their policies on prices, payment, delivery, quality, returns, and refunds. Without such evidence, they have no basis for denying your request for restocking.

4. Finally, you could propose that both parties work together to establish a long-term agreement that outlines the terms of their business relationship, including a clear return policy. This would help to avoid any future misunderstandings or disputes and foster a more productive and collaborative partnership.

Overall, it's important to remain polite and professional in your response while also firmly asserting your rights as a customer. Good luck!