Hello, Betty Jackson here.
Hello Betty, nice meeting you. How can I help you today?
On a sudden business meet I need to travel to another city, so I want to change my trip what recently I had booked a ticket, could you help in that?
Sure, I can help in your changing. Please wait to check your booking.
Ok.
Sorry Betty, there is no ticket that has reserved on  provided name.
That's ok. Thank you for your time.
Is there any other information that you want?
No, thank  you.
Ok, thank you for reaching, have a nice day.