You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER:  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?

ASSISTANT: Sure, I am here to help you with that, can I know your good name to proceed further?

USER: Brian Wilson here.

ASSISTANT: Thank you. Please be online for a while. I will check your reservation status and get back to you.

USER: Ok.

ASSISTANT: I am sorry to say you that there is no reservation found under your name in our database.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.