Hi, I  am Karen Harris.
user
Hello. How may I render you today?
assistant
Due to the sudden change in climate, my business conference got postponed. So I want you to change my existing reservation.
user
Sure, please wait a moment I will check the reservation status.
assistant
Sure.
user
Thank you for waiting, I have checked in reservation list to change your ticket, but could not find any reservation with your name.
assistant
Ok, no worries at all.
user
Thank you for availing us.
assistant
Thank you for your assistance.
user