Hi.
user
Hello. How Can I help you?
assistant
I want to change an existing reservation. Could you please help me to change reservation?
user
Sure,may I know your name for changing reservation.
assistant
Sure, my name is Matthew Williams.
user
OK,please wait a moment.
assistant
Sure.
user
Sorry Matthew Williams, there is no reservation on your name.
assistant
I want travel from DC-IAD to NC-CLTT. Travel dates are 12/26 and 12/28.
user
As per your requested details there is a flight matched. Shall I proceed?
assistant
OK fine, you can book my ticket.
user
OK. Your flight ticket is booked.
assistant
Thank you for helping me.
user
Your welcome.
assistant