Hello.
user
Hello. How may I serve you?
assistant
Is it possible to change me existing reservation which I have done earlier?
user
Sure, I help you in getting this issue resolved and see that your flight reservation has been changed. May I know your name please?
assistant
My name is Anthony Miller.
user
Wait for a moment please.
assistant
Sure.
user
Thanks for your patience. But I am sorry to inform you that I could not find your flight reservation to change it.
assistant
No problem, thank you for your time.
user
Thank you.
assistant