Hello.
user
Hello, how may I serve you?
assistant
My name is Ashley Wright. I need to change an  existing reservation.Can you help me that?
user
Sure, could you please provide me your change details?
assistant
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.
user
Please wait a moment, I will change your reservation.
assistant
Ok.
user
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?
assistant
Sure, you can proceed.
user
Your ticket has been booked.
assistant
Thanks for your information.
user
Thank you contacting us, have a nice day.
assistant