Hello.
user
Hello. How may I guide you today?
assistant
I want to do some changes in my existing reservation. Can you help me for that?
user
Sure, I am here to help you with  that. Can you please let me know your full name?
assistant
My name is Kathleen Lopez.
user
Nice name Kathleen Lopez, can I put the conversation on hold for a while?
assistant
Ok.
user
Sorry for the trouble which is caused to you, I haven't found any reservation on your name to change the ticket details.
assistant
That's ok, thank you for checking.
user
You are welcome. Thank you for reaching us.
assistant
Welcome.
user