Hello.
user
Hello, how may I aid you?
assistant
I am Margaret Wright, I booked a ticket to Charlotte, due to some urgent work I have to replan my journey,  can you change my reservation?
user
Sure, I will do it for you. Please stand by I will get back to you.
assistant
Sure.
user
Thanks for your time, sorry to say no flights found with your details.
assistant
Ok, thanks for the information.
user
Thank you for availing us, have a nice day.
assistant