Hello.
Hello. How can I assist  you now?
Due to sudden change in my trip to another location, I would like to do some changes in existing my reservation. Can you please help me out?
Sure, can I have your good name please?
Jennifer White here.
Ok, please wait a moment.
Sure.
Sorry to inform you that  no reservation has found under your name to change.
That's ok, thank you.
Thank you for choosing us.