Hello.
user
Hello, how can I help you?
assistant
Due to change in my plans to visit Dallas, I would like to change my existing reservation. Will you help me with this?
user
Sure, can I have your name to check the reservation status?
assistant
My name is Rebecca Jackson.
user
There is no reservation found under your name to do modifications in that.
assistant
Ok, not an issue. May be something went wrong while booking.
user
Yes, may be.
assistant
Thank you for providing information.
user
Thank you for choosing us.
assistant