Hello.
Hello, how may I assist 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, could you please provide your name to check your reservation status?
My name is Lisa Clark.
Ok, please wait a moment I will check and proceed further.
Sure.
Sorry to say, there is no reservation on your name in my database.
Ok, not an issue. May be something went wrong while booking the ticket.
Thank you for reaching us, have a nice day.