During an exploratory interview, your colleagues ask a participant the following: “What do you use our app for, and do you like the experience?” You could improve this question by:

Adding “and is there anything else you want to tell me?” to the end of your questions.
Instead of asking them if they liked the experience, make it a leading question by asking “What do you like about the experience?”
Saying the participants name before each question.
Only asking one question at a time.