Hi.
Hello. How may I help you at this moment?
I want to change my existing reservation to new travel dates, can you help me over that?
Sure, I will help you to change that reservation but I need your name to check details.
Sure, I am Thomas Hall.
Please wait for a minute.
Ok, take your time.
Based on your request, I could not find any reservation with your name to change that reservation.
It's ok, it might be not done properly while booking.
It's my pleasure, have a safe journey.