You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid 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, we are here to help you. On whose name, the reservation has been made earlier?

USER: Jerry Wright here.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for your time, there is no active reservation found in your name.

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

ASSISTANT: Thank you for choosing us.