Hello.
user
Hello. How may I help you today?
assistant
I am Margaret Carter.
user
Yes Carter.
assistant
I want to change my existing reservation, can you please help me for that?
user
Sure, I will help you. Sorry Carter, there is no reservation found with your name.
assistant
That's ok, no problem.
user
Thank you for choosing us.
assistant
Thank you for checking. Welcome.
user