Hi.
user
Hello, how can I assist you?
assistant
I am Rebecca Perez. I booked a flight ticket  earlier to go for a death valley adventure at Orlando but the trip got postponed. Please change my existing reservation.
user
Sure, please wait a moment.
assistant
Ok, take your time.
user
Thanks for waiting, there was no reservation found on your name.
assistant
That's fine, thank you for the information.
user
Thank you for choosing us.
assistant