You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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 in changing my reservation?

ASSISTANT: Ok, please mention your name to check your reservation status.

USER: Myself Kevin Taylor.

ASSISTANT: Sorry to say, there is no reservation found on your name to change it.

USER: It's ok, thank you.

ASSISTANT: Thanks for reaching us.