Hi.
user
Hello.
assistant
I am Carol Carter.
user
How can I render you at this moment?
assistant
I want to change an existing reservation due to sudden change in my  trip. Can you help me?
user
Sure, I am here to help you.
assistant
Thank you.
user
Please wait for few minutes.
assistant
Ok.
user
There is no existing reservation found on your name.
assistant
No issue. Thank you.
user
Thank you for opting us.
assistant