Hello.
user
Hello, how may I assist you at present?
assistant
I would like to change my existing reservation, can you help me in that?
user
Sure, I am here to help you to change it. Can I have your name please?
assistant
Sure, the ticket has been reserved on the name Nancy Walker.
user
Ok, please wait for a while.
assistant
Sure, I will wait for your response.
user
Sorry to say that, there was no reservation found on your name to change it.
assistant
That's ok, no problem. Thank you for the information.
user
Thank you for availing us.
assistant