Hello.
Hello. How may I assist you at this moment?
Due to change in my plans to Dallas, I would like to change my existing reservation. Can you help me with this?
Sure, I will help you in changing, please hold on for a moment to check your reservation status.
Sure.
May I know your name please?
My previous reservation has done with the name Mary Allen.
Allen, there is no any active reservation with your name in my database.
Ok, not an issue. May be something went wrong while making the reservation previously. Thank you for providing information.
It's my pleasure.