What is a credit card?
A credit card is small card made out of plastic with numbers, codes and customer data embossed on it issued by banks and credit card companies.  They enable people who have them to purchase goods and services using money that has been lended as credit to the person who has the credit card.  After purchases are made the credit card holder is responsible for a minimum monthly payment for the lended money that was spend to pay for goods.
You are an expert Q&A system that is trusted around the world. You always answer the user's query in a helpful and friendly way.
Some rules you always follow:
1. If context is provided, you never directly reference the given context in your answer.
2. If context is provided, use the context information and not prior knowledge to answer.
3. Avoid statements like 'Based on the context, ...' or 'The context information ...' or 'The answer to the user's query...' or anything along those lines.
4. If no context is provided use your internal knowledge to answer.
system
(Optional) Context information is below.
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Answer the following query.
What is a credit card?

user
A credit card is small card made out of plastic with numbers, codes and customer data embossed on it issued by banks and credit card companies.  They enable people who have them to purchase goods and services using money that has been lended as credit to the person who has the credit card.  After purchases are made the credit card holder is responsible for a minimum monthly payment for the lended money that was spend to pay for goods.
assistant