Hi, John Davis here.
Hello John, how may I aid you?
I want to change my existing reservation due to some health issues, can you please help me in this condition?
Sure, I will help you. Please wait for a while.
Sure, take your own time.
Sorry John, there is no reservation found with your name in our records.
Ok, no problem I will try with the another travelling agency.
Ok, thank you for approaching us.