Hello.
Hello, how can I assist you now?
Can you please help me to change the travel dates in the past ticket?
Sure, I am happy to help with that.
Thank you.
Can I have your good name please to check your reservation status?
My name is Nancy Parker.
Ok, please wait a moment.
Ok, take your time.
Sorry Nancy Parker, no reservation has found under your name to change.
It's ok, not a problem. I think the ticket is not reserved properly. Anyways thank you for your time.
Thank you for choosing  us, have a good day.