Hi.
Hello, how may I assist you today?
I would like to change my flight reservation as my mother is unwell, can you please help me?
Sure, may I know your name for the changing process?
Thank you. I am Benjamin Roberts.
Thank you, please wait for a while.
Sure.
 Sorry, we couldn't find a reservation on your name to change.
No problem, thank you for checking.
Welcome, thank you for reaching us.