Hello,.
user
Hello, how can I help you today?
assistant
I am Gregory Thompson. I want to change my recent reservation as my joining date got postponed. Can you help me in changing?
user
Sure, please wait for a moment.
assistant
Sure.
user
Sorry to say that, no reservation was found with your good name.
assistant
Not a problem, thank you for the information.
user
Thank you for reaching us.
assistant