Hello.
user
Hello. How can I assist you today?
assistant
I am Mary Walker. I want to change my flight reservation as my trip got postponed, can you please help me?
user
Sure, please wait a second I will check the update.
assistant
Sure. I will wait.
user
Sorry to inform you, there is no reservation found on your name to change the reservation.
assistant
Ok, thank you for the information.
user
Thank you for choosing us.
assistant