Hello. I am Helen Jones.
Hello, how may I oblige you today?
Could you please help me to change my reservation which was booked to Houston last week?
Sure, we are mirthful to help you. Please wait for a few minutes.
Sure.
Thanks for your time, we are sorry to inform you that no reservation was found on your name in our database.
Ok, thank you for notifying me.
Thank you for choosing us.