Hi. I am Nancy Johnson.
user
Hello, how can I assist you?
assistant
I want to change my reservation as my get together party got postponed. Can you help me?
user
Sure, I am here to help you. Wait a minute please.
assistant
Ok.
user
Thanks for your time, sorry to say no flights found with your name.
assistant
It's Ok.
user
Thank you for choosing us, have  a nice day.
assistant
Thanks for your response.
user