You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can 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: Sure, can you please provide me your name to check the reservation?

USER: Myself Eric Martin.

ASSISTANT: Sorry, there is no reservation with your given name.

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

ASSISTANT: Thank you for reaching us.