Hello.
user
Hello, how may I assist you?
assistant
I am Dennis Lee. Can you please change my existing reservation which I have done already?
user
Sure, I am glad to help you with that. Please give me a moment to check your previous reservation status.
assistant
Thank you. Sure.
user
Sorry, there are no flights in this route as per your travelling details.
assistant
Ok, no problem. It is not an issue. Thank you for the service.
user
Thank you for approaching us.
assistant