Hello.
Hello, how may I assist you?
I want to change my existing reservation which I booked a week ago, can you please help me?
Sure, I will help you. May I know your name please to check the reservation status?
Sure, my name is Thomas Brown.
Thomas, I could not find any reservation with your details.
Ok, no issues with it. Anyways, thank you for checking.
Thank you for reaching us, have a good day.