Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: Sorry for the extensive story.

I work in a very small office that is right next to a major chain restaurant. My coworkers and I frequent the restaurant on our lunch breaks. We go in today and we have a server who recognized our group, as she has served us a few times. I order a side salad with a cup of chili and my coworkers order similar items that don't cost too much. 

After we eat, the server came by with our checks and my bill was $10 and some change. I wanted to pay with cash and only had 3 $5.00 bills. So I hand them to the server and she says, "I will be right back with your change." She comes back and hands me my receipt with a five dollar bill in it. I hand it back and say "Sorry, could I have some ones?" as I thought she was going to bring back the coin change and a few ones. As she walked away to get change, my co-workers look at me a little weird and asked what I planned on tipping her. I mean I planned on tipping $3.00 but they looked at me disapprovingly. I ended up leaving her $3.00.

I worked as a server for 3 years and to me a tip was always a tip, even a shitty one, and I always thought a 30% tip was really good for any amount of a check. 

My coworkers kind of made me feel bad, but AITA for wanting my change to leave that tip?

wanting to leave a non-excessive tip