Hello.
Hello, how may I serve you today?
Due to changes in my plan, I need you to change my recent booking.
Sure, please share the name on which you have done you reservation.
I am Jack Hall.
Kindly wait for a while.
Sure, I will stay online.
We don't have any reservation with the name of Jack Hall to make changes.
That's ok. Thank you for trying to help me.
Thank you.