Hi.
user
Hello.
assistant
Katherine Lopez here.
user
How can I assist you?
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 Lopez, please wait a moment.
assistant
Ok.
user
Sorry to say that, there is no reservation found on your name.
assistant
That's ok, thank you for your help.
user
Thank you for approaching us.
assistant