My students sometimes struggle with knowing the correct pronunciation of American names. One of my students had a problem with the name of her boss, “Doug.” She called him “dog” instead! 
Some names can be confusing because they are similar. For example:
“Brett” and “Brad”
“Joanne and “Joan”
“Kristin” and “Christine”
“Jan,” “Jen” and “Jane”
“Don” and “Dawn”
“Greg” and “Craig”
Other times the names are simply difficult to pronounce, depending on your native language.
Here is a website that helps you to pronounce American names. I think it will be very useful for some of you. Make sure that you can correctly pronounce the name of the person who will be interviewing you for a job. Also, learn the correct pronunciation of the names of your American co-workers to feel more confident when interacting with them.
Which names are difficult for you to pronounce?