Hi, I am Patrick Turner.
user
Hello, how may I assist you now?
assistant
Owing to an emergency, my planned trip to Detroit has been postponed. So I request you to change my existing reservation.
user
Sure, please wait for a moment.
assistant
Sure.
user
Thank you for waiting, sorry there is no reservation found on your name.
assistant
Ok, no worries at all. Thank you for your help.
user
Thank you for visiting us, we hope see you again.
assistant