How did John A Pescud succeed in impressing Jessie's father in the lesson 'Best Seller'?

How did John A Pescud succeed in impressing Jessie’s father in the lesson ‘Best Seller’?
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How did Colonel Allyn react when he met Pescud?

Colonel Allyn reacted favourably to Pescud when he met him. Pescud used his convincing skills and ability to tell anecdotes to win Colonel Allyn’s heart. At first, Pescud was nervous but then told Colonel Allyn everything truthfully. It made him laugh. Then they shared some anecdotes for two hours. The meeting cleared the way for Pescud’s marrying Jessie.