Hello.
user
Hello, how may I assist you?
assistant
I want to change my existing reservation because my trip got postponed. Can you aid me?
user
Sure I help you out, please provide me your name to check the reservation details on your name.
assistant
Myself John Jackson.
user
Sorry John, no reservation found on your name.
assistant
It's ok, thank you for the information.
user
Thank you for reaching us.
assistant