To beep or not to beep

Sir, – Heading into a car park in Dublin city centre at 7.20am yesterday, I had to take off my seat belt to lean further out the window to reach the ticket dispenser button. The red car behind me honked furiously.The honking didn’t make the process any faster. The end-to-end process took no more than 15 seconds. Can readers tell me what my appropriate gesture or response should be? – Yours, etc,

SIOBHÁN NÍ CHUANAIGH,

Clonskeagh,

Dublin 14.