Hello.
Hello, how may I serve you?
My name is Ashley Wright. I need to change an  existing reservation.Can you help me that?
Sure, could you please provide me your change details?
Sure, My source point is CA-SFO to destination is NY-LGA. My travelling dates are departure date from on 11/28 to return date on 11/30.
Please wait a moment, I will change your reservation.
Ok.
Thanks for waiting,  based on your details one flight is available. The flight details are airline Delta and flight number is 1006 with one connection limit, price of 100. Shall I proceed for booking?
Sure, you can proceed.
Your ticket has been booked.
Thanks for your information.
Thank you contacting us, have a nice day.