I using the Postman for Ex4. I did update the my Exercise 3 to complete this exercise.
Here is my work:
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Create the bookingdata.csv file for the data

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Update the body of request to booking to using the data from file instead using the hard-code data.

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Running the collection with the data file:

Note: To make sure the data is correct, using the Preview button

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Here is the result:

P/s: The code on Katalon for this exercise is so cool. I challenge myself do this exercise again on Katalon 




