Hi.
user
Hello.
assistant
Patricia Anderson here.
user
How can I aid you at this moment?
assistant
 I have to do some modification in my previous flight ticket booking that there is a sudden event held at my home town, so I am unable to travel the trip. can you please help me out with changing of my reservation?
user
Sure, I am glad to help you with that. Please wait for a minute.
assistant
Ok.
user
Sorry to say that, there is no reservation found based on your name in our database.
assistant
That's ok, thank you for your help.
user
Thank you for consulting  us.
assistant