This flowchart traces how to accurately collect payment from user
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User accepts rental fee
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User chooses type of Credit Card for Payment (Visa/MC/AMEX/Discover)
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System Accesses User's Financial Account to Verify Funds
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YES
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User Enters Credentials Again
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If Non-Sufficient Funds, Display Message: NSF, Please Re-Enter Credentials
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If Funds are Sufficient, Proceed to Check Out of Bike
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YES
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Display: Thank You.
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User Chooses Different Credit Card
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Credit Card Information is Accepted
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YES
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Display: Thank You
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Accurately Charge Users
