Hello.
user
Hello. How may I 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
May I know your name to change your existing reservation?
assistant
My previous reservation has done with my name Ashley Garcia.
user
Sorry Garcia, no reservation found by your name.
assistant
Ok, not an issue. May be something went wrong while booking the ticket. Thank you for providing information.
user
Thank you for contacting us.
assistant