Hi.
user
Hello, how can I help you today?
assistant
Owing to an emergency, my planned trip to Navajo  adventure with friends got postponed. So I want you to change my existing reservation.
user
Sure, kindly mention your name.
assistant
Sure, I have a recent reservation with name Anna Hall.
user
Please wait a moment.
assistant
Sure.
user
Sorry to inform, no reservation found with your name.
assistant
Ok, not an issue.
user
Thanks for reaching us.
assistant
Thank you for your support.
user