Handling difficult customer interactions is something I've always kind of prided myself on. At Warby Parker, I did lead trainings in that. I think it's important just to remember that it's a person on the other end and it's not personal. Also, just to remain calm and let them speak and air any issues or grievances or problems that they might be having and really listen to what they're saying, not interrupting and just having that patience and staying composed. It's never a personal attack and I think a lot of people can take it that way.