We arrived at Silver zone check-in at Bristol Airport at aporox 11 am on 11th December and started to proceed with the self check-in which we hadn't used before. I followed instructions and was trying to scan the bar code but couldn't find the scanner. My husband asked an assistant for help as couldn't see the scanner abd she mocked his accent. I scanned the bar code which then directed me to a list of flights - again I asked the same assistant for help. At this point we determined our return flight but she then became very rude and condescending and carried on the rest of the process herself saying "we'll be here all day at this rate". I thought the assistants are there to help? In future we will use alternative parking.