Hello,.
user
Hello, how can I help you today?
assistant
I want to change my existing reservation as my travel dates of journey has been postponed. Will you help me in changing my reservation?
user
Sure,may I know your name?
assistant
Reservation is done with my name Kevin Martin.
user
Ok, please wait a moment.
assistant
Sure.
user
Sorry to say, no reservation found with your name.
assistant
Ok, thank you for sharing the information.
user
Thanks for reaching us.
assistant