My dentist calls me by my first name, and I use his. One GP used to do that too but I resented it as I only called her Dr mc.... I think she'd have been horrified st the use of her first name. I always give my first name when booking e.g. lunch st a pub, or to anyone coming round to give estimates and happy for them to go on calling me that. It's my name, after all. Detest "young" lady as that really is patronising. Don't mind darlin' , duck, doll, or the further North equivalents. Hate "dear" as that's really enfeebling. Yes, see you later from the 16 year old cashier is just daft as is the exhortation to have a nice rest of my day. Thank you, 'bye would do.