Hello.
Hello, how may I help you?
Due to change in my plans to visit Dallas, I would like to change my existing reservation. Can you help me with this?
Sure. Can you please tell me your name?
My previous reservation has done with the name Matthew Lopez.
Sorry, there is no reservation with your name to change further.
Ok, not an issue. May be something wrong while booking the ticket. Thank you for providing information.
Thank you for choosing us, have a great day.