Hello.
user
Hello,.
assistant
I am Steven Lee.
user
How may I assist you?
assistant
I need to change my existing reservation due to postpone of my conference. Could you please help me?
user
Sure, I am blissful to help you. Please wait a while.
assistant
 Sure.
user
Thanks for your time. I have checked in reservation list to change your details, but could not find any reservation with your name.
assistant
No problem, thank you for the information.
user
Thank you so much for opting us.
assistant