Hi.
Hello. How may I assist you?
Due to some personal issue, I cannot able to travel now can you help me to change my recent reservation?
Sure, may I know your name for checking your status?
Please check reservation details with the name of Sandra Baker.
I got your reservation, may I know your locations which you want to travel?
Please book reservation with new details that, I want to travel from BOS to IAH.
Fine, please provide your travelling dates too.
My new travelling dates are 05/09 and 05/11.
Sorry Sandra Baker, there is no flight for you according to your new information.
That's fine, anyways thanks for your information.
Thanks for contacting us, have a good day.