Hello.
user
Hello. How can I guide you?
assistant
I would like to change my existing reservation due to postpone of my conference.
user
Sure, We are here to help you out.
assistant
Thank you for accepting my request.
user
Can I know your name?
assistant
I am Jeffery Clark.
user
Please wait a while.
assistant
Sure, I will wait for your response.
user
 Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to change it.
assistant
No worries, thank you for the information.
user
Thank you for reaching us.
assistant