Hello.
user
Hello, how can I help you today?
assistant
I want to change my existing reservation, can you please help me with this?
user
Sure, I am here to help you.
assistant
Thank you.
user
Can you please mention your name?
assistant
I am Patricia Turner.
user
Sorry, no reservation found with your given name.
assistant
Ok, no problem.
user
Thank you for choosing us.
assistant
Thank you for your information.
user