Hi.
user
Hello, how may I assist you?
assistant
I am Karen Johnson. Can you please assist me in changing my travelling dates in my existing reservation?
user
Sure, we are here to help you. Please wait for a while.
assistant
Ok, I will wait for your reply.
user
Thanks for your time, there is no active reservation found in your name to change.
assistant
Ok, thanks for your information.
user
Thank you for availing us.
assistant