Coldplay Tickets - Wish to swap 2 tickets 4th June at Emirates for 2 tickets 1st June +

Hi, I have 2 tickets for Coldplay at the Emirates, on Monday the 4th June and, since I am unable to attend, would like to swap them with 2 tickets for Coldplay at the Emirates on Friday the 1st June. Please sms to 0758 314 27 14 Daniel