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 with changing of my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please provide your name to check for earlier reservation?

USER: Sure, myself Emily Thompson.

ASSISTANT: Just a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, I did not find any reservation on your name to proceed for modification.

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

ASSISTANT: Thank you for contacting us.