Hello.
user
Hello, how can I assist you?
assistant
I would like to change my existing reservation because my trip dates are got postponed, can you help me?
user
Sure, I am here to serve you.
assistant
Thank you.
user
May I know your name?
assistant
Jack Turner here.
user
There is no reservation found under your name.
assistant
That's ok, thank you for checking.
user
Thank you for choosing us.
assistant