In the dynamic world of software development, customer interactions serve as the cornerstone for crafting effective programs. Consider a conversation between a customer and a shopkeeper who sell shawarma:

Customer: What are you selling?
Shopkeeper: Shawarma.
Shopkeeper: How much quantity do you want?
Customer: 2.
Customer: What is the price?
Shopkeeper: Rs 120.
Shopkeeper: Do you need a receipt?
Customer: Yes.

These seemingly routine questions form the backbone of program development. By analyzing such exchanges, developers can formulate pseudocode, outlining the logical steps:

1. Prompt user for item.
2. Prompt user for quantity.
3. Calculate total price.
4. Generate receipt if requested.

From there, translating pseudocode into program code becomes intuitive. Each line of dialogue translates into code instructions, leading to the creation of a user-friendly and efficient program. Thus, customer-business interactions serve not only as a source of information but also as a catalyst for program development, ensuring that software meets user needs effectively.