Hi,.
user
Hello. How may I amend you today?
assistant
Please, change my existing reservation because my round trip dates has been postponed due to meeting.
user
Sure.
assistant
Thank you.
user
Please share your name, to check with the reservation list.
assistant
Reservation is done with my name Kathleen Harris.
user
Ok, Thanks for your time.
assistant
Ok.
user
But no flight seat  is reserved under your name to proceed further.
assistant
Ok, I think I made reservation with other airline.
user
Ok, Thank you.
assistant
Thank you for your help.
user