You work for a state-chartered bank, and are not subject to federal governmental procurement regulations (e.g., the FAR)

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You work for a state-chartered bank, and are not subject tofederal governmental procurement regulations (e.g., the FAR).You’re conducting a pre-response conference with the sellers for anRFP that has just been released.
One seller lingers after the conference and approaches you. It’sa seller you’ve done business with in the past. A furthercomplication: the seller also happens to be a large customer ofyour bank. None of the other sellers are customers. The seller asksyou out to lunch, indicating that the he would like to discuss theRFP.
What do you do?