Exercise $3(15$ points$)$

Derrick Hamlin spent considerable time working with a prospective buyer. He thought a good order would be forth coming on his next call. A portion of his conversation with the buyer went as follow. BUYER: You know, I like what I hear about your emergency food delivery system. But how can I be sure it will be available on the days that we actually experience an emergency need for food?

DERRICK: I've never had any complaints before. I$\text{'}$m pretty sure they will be easily available. BUYER: You are sure of that?

DERRICK: I've never heard of any problems that I can remember.

BUYER: $($Appearing unconvinced and looking at some papers on his desk without glancing up$)$: I'll let you know later when I plan to do$.$ Thanks for dropping by$.$

How can you improve Derrick's answer to the buyer's concerns?