Hello. Is this flight ticket booking agency?
Yes, you are at the right place, how can I assist you today?
I need your help for changing my existing reservation, because I am unable to catch flight on that day due to some personal issue, can you help me?
Sure, I can help you with that. May I know your name please?
Thanks. Sure, my name is Andrew Adams.
Adams, sorry to inform you, there is no reservation found with your name in our records. May be, on that day you hadn't done your reservation properly.
Oh, it's ok no problem. Thank you for your information.
It's my pleasure.