Hello.
user
Hello, what can I do for you?
assistant
Melissa Jones here. My holiday trip has been postponed, so I would like to change my existing reservation. Can you help me?
user
Yes, sure I'll help you.
assistant
Ok.
user
Sorry to say this, but there is no reservation with your name.
assistant
It's fine. Anyway, thank you for your help.
user
Most welcome.
assistant