Hello. I am Mary Green.
user
Hello, how can I serve you today?
assistant
As I have planned to attend a live musical event, unfortunately the program got postpone, So I would like to change my existing reservation. Can you help me with it?
user
Sure. Please wait for a while.
assistant
Sure.
user
Thanks for waiting, there is no reservation found on your name. Thank you for choosing us.
assistant
Its ok,thank you for your response.
user