Hello, my name is Cynthia Campbell.
user
Hello. How can I aid you?
assistant
I want to change my existing reservation as my trip got postponed. Can you help me with it?
user
Sure, Give me  a minute.
assistant
Sure.
user
Thanks for being waiting. We didnt found any reservation by this name.
assistant
That's ok, thank you for the information.
user
Thank you for opting us.
assistant