Hello.
user
Hello. In which way I can aid you today?
assistant
Due to change in my plans to visit Dallas, I would like to change my existing reservation. Can you help me with this?
user
Sure, I can help you with that. May I know your name for further process?
assistant
My previous reservation has done with the name Frank Harris.
user
Ok, please hold on a moment, I will check your reservation status.
assistant
Sure, take your own time.
user
There is no previous reservation in your name Frank Harris.
assistant
Ok, not an issue. May be something went wrong while booking the ticket. Thank you for providing information.
user
You are welcome.
assistant