Hello.
Hello, how may I aid you today?
Due to sudden change in my trip I need to change my existing reservation. Can you help me changing my existing reservation?
Sure, I am here to help you with this.
Thank you.
May I know your name please?
I am Patricia Martinez.
Sorry Martinez, there is no reservation found as per your name to change it.
No problem. Thank you for the information.
You are welcome always.