Hello.
Hello. How can I address you?
I  made a reservation earlier to visit Phoenix in direct flight but now I want to travel in connecting flight. can you help me in changing my reservation?
Sure, We are here to help you.
Thank you.
May I know your name to trace your details?
I am Carolyn Edwards.
 Sorry, we couldn't find a reservation on your name to change.
Ok, no problem. Thank for your information.
Thank you for choosing us.