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